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Tomaso

2026-07-02

Authorities cited

Opinion

majority opinion

NOTICE: All slip opinions and orders are subject to formal revision and are superseded by the advance sheets and bound volumes of the Official Reports. If you find a typographical error or other formal error, please notify the Reporter of Decisions, Supreme Judicial Court, John Adams Courthouse, 1 Pemberton Square, Suite 2500, Boston, MA, 02108-1750; (617) 557-1030; SJCReporter@sjc.state.ma.us

24-P-1327 Appeals Court

MICHAEL TOMASO, petitioner.

No. 24-P-1327.

Worcester. January 5, 2026. – July 2, 2026.

Present: Walsh, Toone, & Tan, JJ.

Sex Offender. Practice, Civil, Sex offender, Civil commitment,

Report. Evidence, Sex offender, Expert opinion, Police

report. Witness, Expert.

Petition filed in the Superior Court Department on February 5, 2019.

The case was tried before Michael J. Pineault, J.

Frederic G. Bartmon for the petitioner.

Brian P. Mansfield for the Commonwealth.

TOONE, J. Because sexually dangerous person proceedings

seek to determine a person's propensity to commit sexual

offenses in the future, they are governed by a unique and

complex set of evidentiary rules, some prescribed by statute and

others based in common law. See McHoul, petitioner, 445 Mass.

143, 147-148 (2005), cert. denied, 547 U.S. 1114 (2006);

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Commonwealth v. Mackie, 100 Mass. App. Ct. 78, 84-85 (2021). In

this case, the petitioner, Michael Tomaso, was civilly committed

as a sexually dangerous person in 2009, and in 2019 he filed a

petition pursuant to G. L. c. 123A, § 9, for release from his

confinement. Following a trial in the Superior Court, a jury

found that he remained sexually dangerous. At trial, each of

the three psychologists called by the Commonwealth opined that,

even though the petitioner was last convicted of a sexual

offense thirty-five years ago, he was likely to sexually

reoffend if released because he suffered from sexual sadism

disorder, among other conditions. In arriving at their

diagnoses of sexual sadism, all three experts relied

predominantly, if not exclusively, on the alleged facts

underlying dismissed sexual offense charges against the

petitioner in 2002 and 2003. Because we cannot determine from

the record whether those alleged facts were "independently

admissible" under Department of Youth Servs. v. A Juvenile, 398

Mass. 516, 531 (1986), and Commonwealth v. Markvart, 437 Mass.

331, 337 (2002), due to the Commonwealth's failure to make such

a showing and the judge's failure to hold a hearing on that

issue as the petitioner had requested, it was error to admit the

experts' sexual sadism disorder diagnoses. As we cannot say

that this evidence had no impact on the jury's verdict, we

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vacate the judgment, set aside the verdict, and remand this case

to the Superior Court for a new trial.

Background. The petitioner was convicted of sexual

offenses on three occasions. In 1977, he pleaded guilty to

indecent exposure and threatening to commit a crime; the victims

were his adult sister and her boyfriend. He was sentenced to

two months in the house of correction, suspended, with one year

of probation. In 1982, the petitioner grabbed a stranger's

breast over her clothing in a public setting. He was convicted

of sexual assault, and committed to the house of correction for

eight months followed by one year of probation upon release. In

1991, the petitioner fondled a woman's breasts on a bus and

kicked her father after the father confronted him. A jury

convicted him of indecent sexual assault and battery on the

woman and assault and battery by means of a dangerous weapon on

the woman's father, and he was sentenced to eighteen months in

the house of correction and three years of probation.

Other sexual offense charges did not result in convictions.

In 1978, the petitioner was charged with breaking and entering,

assault with the intent to rape, and assault and battery related

to an incident involving his girlfriend (1978 charges). Those

charges were dismissed. In 2002, while traveling in Rhode

Island, the petitioner allegedly forced a man to perform sexual

acts on him, but the resulting sexual assault charge (2002

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charge) was dismissed. In 2003, the petitioner assaulted a

woman with a knife. Three years later, he pleaded guilty to

assault by means of a dangerous weapon, carrying a dangerous

weapon, and failure to register as a sex offender, and was

sentenced to a term of from three to five years in State prison

(2006 convictions); but the remaining charges against him --rape, rape with force, unnatural rape, indecent assault and

battery on a person over fourteen, kidnapping, and unnatural

acts -- were dismissed (2003 charges).

In 2009, the petitioner was found to be a sexually

dangerous person and committed to the Massachusetts Treatment

Center pursuant to G. L. c. 123A, § 9. In 2019, he petitioned

the Superior Court for examination and discharge, claiming that

he was no longer sexually dangerous. In connection with his

petition for discharge, he was examined by two qualified

examiners, Dr. Katrina Colistra and Dr. Crystal Cookman. See

G. L. c. 123A, §§ 1, 9. See Chapman, petitioner, 482 Mass. 293,

303-309 (2019) (discussing role of qualified examiners in

discharge proceedings). Both qualified examiners submitted

reports to the court, as did Dr. Gregg Belle on behalf of the

Community Access Board (CAB).1

1 The CAB conducts annual reviews of and prepares reports on the current sexual dangerousness of civilly committed sexually dangerous persons. See G. L. c. 123A, § 6A. Its reports are admissible in petition for discharge proceedings. See id. § 6A,

5

Prior to trial, the petitioner filed a series of motions in

limine to exclude certain evidence at trial. One motion sought

to exclude evidence of the dismissed 1978, 2002, and 2003 sexual

offense charges. Another asked the judge to, among other

things, exclude the opinions of the qualified examiners or, at

least, conduct a voir dire "prior to any opinion being offered

or allowed." In support of these motions, the petitioner

asserted that "no information is available" regarding the 1978

charges, which were "dismissed for lack of prosecution, with

consent of [the petitioner] and the complainant." The

Commonwealth did not dispute that there was no available police

report for the petitioner's 1978 charges. With respect to the

2002 charge, the petitioner attached a pleading from the Rhode

Island Attorney General's Office stating that it had "reviewed

this case and determined it is non-prosecutable for the

following reason: Insufficient credible evidence. Complaining

witness cannot be located." With respect to the dismissed 2003

charges, the petitioner attached a transcript of his plea

colloquy for his 2006 convictions in which the prosecutor

§ 9. CAB witnesses are not independent experts, however, and their diagnoses cannot serve as the requisite clinical basis for a finding of sexual dangerousness. See Green, petitioner, 475 Mass. 624, 625, 629-630 (2016); Johnstone, petitioner, 453 Mass. 544, 551-552 (2009). See also Pierce, petitioner, 497 Mass. 140, 152 n.23 (2026).

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explained that the Commonwealth was dismissing the charges

because, "in preparation for trial and meeting with the

complaining witness, evidence came out that would make several

of those charges more difficult to prove."2

Following a motion hearing, the judge issued an omnibus

pretrial order that denied the petitioner's motions in part and

allowed them in part. With respect to the dismissed charges

against the petitioner, the judge allowed the admission of

information about those charges ("the dates, types of charges,

and dispositions") from court records, but precluded the

admission of alleged facts from the 2002 and 2003 police reports

(whether through direct evidence or set forth in the qualified

examiners' reports). The judge further ruled that, under the

Supreme Judicial Court's decisions in Department of Youth

Servs., 398 Mass. at 516, and Markvart, 437 Mass. at 331, the

qualified examiners could consider and rely on those same

alleged facts because, even though they were excluded from

evidence, they "would be admissible through appropriate

witnesses -- specifically, the two victims, each of whom

provided the information to police directly -- and would also

2 In his motion, the petitioner noted that, because these statements by the prosecuting attorneys were not included in the criminal history records produced by the Commonwealth, it was unlikely that the qualified examiners were aware of them.

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constitute information permissible for the qualified examiners

to consider in formulating their opinions." The judge did not

address the Rhode Island Attorney General's Office's pleading on

the 2002 charge or the prosecutor's statement regarding the

dismissed 2003 charges. Although the judge ruled that the

petitioner was not entitled to a hearing to challenge the

reliability of the qualified examiners' opinions under

Commonwealth v. Lanigan, 419 Mass. 15, 26 (1994),3 he did not

address whether a voir dire or other hearing was required to

determine the admissibility of the alleged facts on which the

qualified examiners based their opinions. See Markvart, 437

Mass. at 337-338 & n.5.

At trial, the reports of the two qualified examiners and

the CAB member were admitted in evidence in redacted form. All

three authors testified as well, and all three opined that the

petitioner suffers from mental abnormalities that make it likely

that he will reoffend sexually, such that he remained a sexually

dangerous person. In particular, all three diagnosed the

3 In Commonwealth v. Bradway, 62 Mass. App. Ct. 280, 283-290 (2004), we rejected a claim that the trial judge should have conducted a Daubert-Lanigan hearing prior to receiving the testimony of two qualified examiners. See Daubert v. Merrell Dow Pharms., Inc., 509 U.S. 579, 589-595 (1993); Lanigan, 419 Mass. 15 at 24-26. The petitioner does not challenge this aspect of the judge's order on appeal.

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petitioner with sexual sadism disorder.4 As defined by the

American Psychiatric Association's Diagnostic and Statistical

Manual of Mental Disorders (5th ed. 2013), sexual sadism

disorder is characterized by "recurrent and intense sexual

arousal from the physical or psychological suffering of another

person, as manifested by fantasies, urges, or behaviors," where

the individual "has acted on these sexual urges with a

nonconsenting person, or the sexual urges or fantasies cause

clinically significant distress or impairment." In her report,

Dr. Colistra based her conclusion that the petitioner meets the

criteria of sexual sadism disorder primarily on the sexual

offense allegations in the 2002 and 2003 police reports.

Because those allegations were redacted in the version of her

report admitted in evidence, only the petitioner's 1977

conviction for indecent exposure was set forth as support for

her sexual sadism disorder diagnosis in that exhibit.

Similarly, Dr. Cookman's diagnosis of sexual sadism disorder

relied mainly on the allegations concerning the petitioner's

4 Dr. Colistra also opined that the petitioner suffers from "a clinical personality disorder best characterized as Other Specified Personality Disorder with Antisocial Traits," but refrained from diagnosing him with the "full disorder" due to insufficient data of the conduct disorder in childhood. Dr. Cookman opined that the petitioner also meets the criteria for frotteuristic disorder and exhibitionistic disorder, relying on the allegations in the police reports as well as his previous convictions and behavior in confinement.

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dismissed 2002 and 2003 charges; those alleged facts were,

again, redacted in the version of her report admitted in

evidence. Both qualified examiners opined that the petitioner's

conduct was repetitive and compulsive, with Dr. Colistra

asserting that the petitioner "continued to offend despite

sanctions and . . . in places with a high risk of detection and

with a notable degree of violence," and Dr. Cookman asserting

that he "continued sexually offending" after his 1977 guilty

plea, "with multiple additional legal interventions between

offenses."

The petitioner introduced the report and testimony of his

own expert, Dr. Eric Brown, who opined that the vast majority of

the petitioner's criminal charges and convictions were nonsexual

in nature, and that he "does not display a pattern of compulsive

and uncontrollable sexual behavior." The petitioner also

testified. The jury found that he remained a sexually dangerous

person.

Discussion. Where the petitioner's appellate rights were

preserved as to the issues at trial, we review to determine

whether there was error, and, if so, whether the error was

prejudicial. See Green, petitioner, 475 Mass. 624, 629 & n.13

(2016) (objection at motion in limine stage in sexually

dangerous person trial preserves appellate rights on same issue

at trial). An error is nonprejudicial only if we are convinced

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that "the error did not influence the jury, or had but very

slight effect" (citation omitted). Commonwealth v. George, 477

Mass. 331, 341 (2017).

1. Admissibility of records of the petitioner's dismissed

sexual offense charges. At the outset, we disagree with the

petitioner's contention that the judge erred in admitting

probation records that listed the petitioner's criminal charges

and convictions, in addition to certified copies of his

convictions. The information in those records was also included

in the qualified examiners' reports, which described the

petitioner's sexual offense convictions and listed his "Criminal

Charges Based on Available Records."

The judge correctly ruled that these records and

information were admissible under G. L. c. 123A, § 14 (c). "We

have long recognized that the admissibility of the various

records and reports in sexually dangerous person proceedings

represents a very radical departure from ordinary evidentiary

rules" (quotations and citation omitted). McHoul, petitioner,

445 Mass. at 147. Although such documents and information would

ordinarily be excluded as inadmissible hearsay, the Legislature

has identified "a variety of records and documents that 'shall

be admissible,'" id., quoting G. L. c. 123A, § 14 (c), including

"juvenile and adult court and probation records," McHoul,

petitioner, supra, quoting G. L. c. 123A, § 9 ("Evidence of the

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person's juvenile and adult court and probation records . . .

shall be admissible in a hearing under this section").

Accordingly, we have concluded that court records listing sexual

offenses and other criminal charges are admissible in sexually

dangerous person proceedings, even if those charges were

dismissed or nol prossed. Commonwealth v. Mazzarino, 81 Mass.

App. Ct. 358, 368 (2012). See Mackie, 100 Mass. App. Ct. at 89-90 (admission of unredacted probation records, including

acquitted charges, was not error).5

2. Admissibility of alleged facts from police reports

regarding the dismissed 2002 and 2003 charges. At the same

time, the judge properly excluded from the jury's consideration

information in the police reports concerning the petitioner's

dismissed 2002 and 2003 sexual offense charges. General Laws

5 In its opposition to the petitioner's motion, the Commonwealth contended that the number and type of criminal charges in a person's history are "empirically related to risk of re-offense" and taken into consideration by the Static-99R, an actuarial measure of risk of future sex offense that both qualified examiners used in their reports. Our resolution of this appeal does not require us to address whether the judge erroneously allowed admission of the petitioner's Static-99R risk labels and twenty-year rate of sexual recidivism. In addition, because we conclude infra that it was error to admit the experts' sexual sadism disorder diagnoses on this record, we do not address the petitioner's argument that the admission of records listing his dismissed sexual offense charges unfairly invited the jury "to infer facts" from those charges "that supported the fundamental opinions of the Commonwealth's experts."

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c. 123A, § 14 (c), provides that "police reports relating to

such person's prior sexual offenses . . . shall be admissible at

the trial." Where a petitioner has been convicted of a sexual

offense, the police report for that offense is admissible.

Commonwealth v. Given, 441 Mass. 741, 744-746, cert. denied, 543

U.S. 948 (2004). That includes "any statements describing the

defendant's conduct and the circumstances attendant to the

offense" in the report, even if that information did not result

in additional criminal charges. Given, 441 Mass. at 745. See

Mass. G. Evid. § 1103(b)(2) (2026). On the other hand,

"[b]ecause we presume innocence until guilt is proved beyond a

reasonable doubt," reports relating to charges of sexual

offenses that were dismissed, nol prossed, or of which the

defendant was acquitted are merely "allegations" and are

generally inadmissible. Markvart, 437 Mass. at 336. In some

cases, we have approved the admission of evidence of sexual

misconduct in police reports where the defendant pleaded to a

nonsexual offense after being charged with a sexual offense and

the sexual nature of the conduct was undisputed. See, e.g.,

Commonwealth v. Torres, 87 Mass. App. Ct. 908, 909 (2015);

Commonwealth v. Starkus, 69 Mass. App. Ct. 326, 333 (2007).6 The

6 In Starkus, for example, the defendant had pleaded guilty to simple assault and battery, but the fact that he raped the victim was supported by both her statements and his admissions. Starkus, 69 Mass. App. Ct. at 329-333. As we later explained in

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judge distinguished those cases here, concluding that the

information in the police reports concerning the petitioner's

alleged sexual misconduct in 2002 and 2003 was inadmissible

because the 2002 charge was dismissed and, as to the dismissed

2003 charges, it was "never proved, admitted, or otherwise

established" that the nonsexual offenses to which the petitioner

pleaded guilty were sexual in nature. See Mackie, 100 Mass.

App. Ct. at 88.

The judge also prohibited the information in the police

reports from being admitted through the experts' testimony or

reports. Even though, as discussed in section 3, infra, the

judge ruled that the qualified examiners were permitted "to

Mackie, "the totality of the circumstances in Starkus established the sexual nature of the assault and battery, and, accordingly, the assault and battery qualified as a 'sexual offense' within the meaning of the [sexually dangerous person] statute." Mackie, 100 Mass. App. Ct. at 87. See G. L. c. 123A, § 1 (defining "sexual offense" to include both enumerated offenses and "any other offense, the facts of which, under the totality of the circumstances, manifest a sexual motivation or pattern of conduct or series of acts of sexually-motivated offenses"). We also determined in Starkus that statements in a police report by other victims of uncharged sexual misconduct by the petitioner were admissible because they showed "a pattern of conduct and the probable existence of the same passion or emotion at the time in issue." Starkus, supra at 332-333. Consistent with these rulings, hearsay is admissible in sexually dangerous person proceedings "if it concerns uncharged conduct of the person and is closely related in time and circumstance to a sexual offense for which the person was convicted or adjudicated a juvenile delinquent or youthful offender." Mass. G. Evid. § 1103(b)(2) (2026).

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consider and rely upon information" from the police reports for

the 2002 and 2003 offenses "as part of the factual bases for

their opinions," he correctly recognized that, under Markvart,

they could not "articulate that basis during their direct

examinations." The Supreme Judicial Court explained in that

case that, "[w]hile allowing an expert to base an opinion on

facts or data that, although admissible, have not actually been

admitted in evidence, we have not allowed the expert to

articulate that factual basis as part of the expert's direct

examination" (citation omitted). Markvart, 437 Mass. at 338.

In addition, although a qualified examiner's report is

presumptively admissible under G. L. c. 123A, § 14 (c), see

Commonwealth v. Baxter, 94 Mass. App. Ct. 587, 590 (2018), such

a report, like the expert's direct examination, cannot be

transformed into "a vehicle for the introduction of facts in

evidence (other than those that the expert directly observed),"

but rather must be redacted "prior to its submission to the jury

to exclude any facts or data that were not presented in evidence

or elicited during the cross-examination of the qualified

examiner." Markvart, supra at 338-339. See Mazzarino, 81 Mass.

App. Ct. at 369. Accordingly, the reports of the qualified

examiners admitted during trial were redacted to exclude details

regarding the petitioner's dismissed sexual offense charges.

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The parties do not take issue with this part of the judge's

ruling.7

3. The qualified examiners' reliance on the facts alleged

in the 2002 and 2003 police reports as bases for their diagnoses

and opinions regarding the petitioner's risk to reoffend. We

turn to whether the qualified examiners could rely on the

excluded information in the police reports concerning the

petitioner's alleged but unproven sexual misconduct in forming

their opinions that he suffers from sexual sadism disorder and

is likely to reoffend and, thus, should remain committed as a

sexually dangerous person. The petitioner contends that the

judge erred by failing to exclude the opinions of the qualified

examiners or, in the alternative, grant his request for a voir

dire "to determine whether there would, at the time of trial,

7 The judge scrupulously enforced his ruling at trial. At one point, Dr. Cookman testified with respect to the petitioner's dismissed 2003 charges that, "even though he wasn't convicted of a sexual offense . . . you have to look at the nature of what was accused." After the petitioner objected, the judge struck Dr. Cookman's answer and instructed the jury to disregard it. At sidebar, the judge instructed the Commonwealth to "keep tighter, tighter, control over [Dr. Cookman], particularly if you're getting anywhere near the [2002] or [2003] charges." "Only a compelling showing of ineradicable prejudice would cause us to conclude that the judge's instructions to disregard [a witness's] testimony were inadequate," Commonwealth v. Thad T., 59 Mass. App. Ct. 497, 508 (2003), and we are satisfied that this exchange did not "put before the jury" facts not properly in evidence, Markvart, 437 Mass. at 338.

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still be a way that the facts set forth in the [police reports]

could be admitted in evidence." Markvart, 437 Mass. at 337 n.5.8

We agree.

a. Admissibility requirements for information on which

qualified examiners may rely. Like the rules governing what

information qualified examiners may disclose in their testimony

and admitted reports, the rules that govern what information

they may rely on as bases for their opinions are complex.

It is well established that a qualified examiner may

receive information about the facts underlying a petitioner's

dismissed sexual offense charges. General Laws c. 123A,

§ 13 (b), provides that qualified examiners shall be supplied

with, amongst other records and reports, "copies of any juvenile

and adult court records," "police reports for each sexual

offense conviction or adjudication," and "such other information

as may be pertinent or helpful to the examiners in making the

diagnosis and recommendation." This provision does not

specifically authorize the provision of police reports related

to charges that did not result in convictions. Markvart, 437

8 Although we focus on the petitioner's motion to exclude or conduct a voir dire with respect to the opinions of the qualified examiners, we note that the same infirmity discussed herein applies to the report and testimony of Dr. Belle who, on behalf of the CAB, opined that the petitioner meets the criteria for sexual sadism disorder.

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Mass. at 334. But because it does not expressly prohibit the

provision of such materials either, the court in Markvart

concluded that "such materials may be provided to qualified

examiners." Id. Here, the unredacted reports from the

qualified examiners and CAB witness show that each expert was

provided with police reports detailing the alleged facts

underlying the dismissed sexual offense charges.

A different question is whether the experts may rely on

such information in forming their opinions. In Markvart, the

court concluded that qualified examiners may base their opinions

on three things:

"(1) facts personally observed; (2) evidence already in the

records or which the parties represent will be admitted

during the course of the proceedings, assumed to be true in

questions put to the expert witnesses; and (3) 'facts or

data not in evidence if the facts or data are independently

admissible and are a permissible basis for an expert to

consider in formulating an opinion.'"

Markvart, 437 Mass. at 337, quoting Department of Youth Servs.,

398 Mass. at 531. Here, only the third prong of this test is at

issue.9

9 As for the first prong, the qualified examiners and CAB witness had no personal knowledge of the alleged facts underlying the petitioner's dismissed sexual offense charges. As for the second prong, as discussed, the judge properly excluded the police reports and allegations set forth therein from evidence. At trial, the Commonwealth could have called an "appropriate witness[]" to prove the alleged facts in the police reports. Markvart, 437 Mass. at 337. Cf. Commonwealth v. Bradshaw, 94 Mass. App. Ct. 477, 481 (2018) ("[T]he limitation placed on the admissibility of witness statements and police

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The independent admissibility requirement for basis

evidence -- that is, the "admissible but not admitted facts and

data" on which an expert's opinion relies, Commonwealth v.

Gordon, 496 Mass. 554, 581 (2025) -- reflects Massachusetts's

relatively restrictive approach to expert opinion evidence. See

M.S. Brodin, M. Avery, & B.K. Golden, Massachusetts Evidence

§ 7.5.3, at 535-538 (2026 ed.). In Department of Youth Servs.,

the Supreme Judicial Court discussed the "settled and

traditional rule in Massachusetts," 398 Mass. at 527, that an

expert witness "may base his opinion upon facts observed by

himself or within his own knowledge and testified to by himself

or upon facts assumed in the questions put to him and supported

either by admitted facts or by the testimony of other witnesses

already given or to be given at the trial, or upon facts derived

partly from one source and partly from the other," id., quoting

Commonwealth v. Russ, 232 Mass. 58, 73 (1919). The court

declined to adopt the then-Proposed Mass. R. Evid. 703, which

would have "enlarg[ed] the basis for expert opinion" by allowing

reports by the court in Markvart does not limit a witness's ability to testify about uncharged sexual misconduct during a trial on a sexually dangerous person petition"). But just as the prosecutors declined to advance the dismissed 2002 and 2003 charges at the time, the Commonwealth did not call the complainants for the 2002 and 2003 charges as witnesses or present any other evidence in support of those allegations in this case.

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expert opinions based on inadmissible evidence of a type

reasonably relied on by experts in the relevant field, as

Federal Rule of Evidence 703 allows. Department of Youth

Servs., supra at 527-528. See Fed. R. Evid. 703 (2011) (Federal

Rule 703) ("If experts in the particular field would reasonably

rely on those kinds of facts or data in forming an opinion on

the subject, they need not be admissible for the opinion to be

admitted"). The court noted concerns that Federal Rule 703 had

created a "serious potential for abuse" by, among other things,

allowing an expert to "base his (or her) opinion testimony on

inadmissible data conveyed to the witness outside the courtroom"

(citations omitted). Department of Youth Servs., supra at 530-531. Yet, even though the court declined to "accept the

principles of the proposed rule," it took "a modest step" in

that direction "by permitting an expert to base an opinion on

facts or data not in evidence if the facts or data are

independently admissible and are a permissible basis for an

expert to consider in formulating an opinion." Id. at 531.

That standard governs expert opinion evidence today. See Mass.

G. Evid. § 703 (2026).

b. The independent admissibility of the alleged facts

underlying the dismissed 2002 and 2003 charges. Applying the

third prong of the Markvart test to this case, the key question

is whether the facts alleged in the 2002 and 2003 police reports

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were independently admissible. Markvart, 437 Mass. at 337;

Department of Youth Servs., 398 Mass. at 531. The judge ruled

that the qualified examiners could rely on those alleged facts

because they "would be admissible through appropriate witnesses

-- specifically, the two victims, each of whom provided the

information to police directly."10 We recognize that trial

judges have broad discretion to admit or exclude expert

evidence, Commonwealth v. Waite, 422 Mass. 792, 804 (1996), and

that discretion extends to how the admissibility of contested

basis evidence is determined. Nevertheless, we conclude that

the judge abused his discretion by admitting the qualified

examiners' reports and testimony without first determining, at a

voir dire, the independent admissibility of the basis evidence

on which they relied. See, e.g., Commonwealth v. Wardsworth,

482 Mass. 454, 467 (2019); Commonwealth v. Roman, 414 Mass. 235,

237-238 (1993).

10The judge reiterated this reasoning at trial, stating that the qualified examiners and CAB witness were

"allowed to rely on information from a police report even

if it didn't result in a conviction, if that information

could have been with an appropriate witness admissible, and

because . . . the police reports make pretty clear that

what they received were direct victim accounts of what had

happened, that would be admissible at trial through an

appropriate witness. The victim, right."

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The qualified examiners' reliance on the dismissed 2002 and

2003 sexual offense charges was evident from their unredacted

reports. At trial, counsel for the Commonwealth acknowledged

that "all three experts have diagnosed [the petitioner] with

sexual sadism[,] which is almost entirely, if not entirely

based, . . . on the [2002] and the 2003 offense[s]." Pointing

to the 2002 pleading from the Rhode Island Attorney General's

Office and the plea hearing transcript from his 2006

convictions, both of which cast doubt on whether the alleged

victims could or would be willing to testify under oath to their

statements set forth in the police reports underlying the

dismissed 2002 and 2003 charges, the petitioner requested in his

motion in limine either the exclusion of the qualified

examiners' reports and testimony, or a voir dire. See Markvart,

437 Mass. at 337 n.5.

As the proponent of this evidence, the Commonwealth was

required to establish that the expert opinions satisfied the

requirements of Markvart and Department of Youth Servs. See

Wardsworth, 482 Mass. at 466-470; Waite, 422 Mass. at 803;

Roman, 414 Mass. at 237-239. In opposing the petitioner's

motion, however, the Commonwealth did not make any showing that

"the underlying 'facts or data' contained in [the police

reports] would potentially be admissible through appropriate

witnesses (e.g., the complaining witness, or the officer who

22

took the defendant's statement)." Markvart, 437 Mass. at 337,

citing Department of Youth Servs., 398 Mass. at 531. In

particular, the Commonwealth did not suggest that the

complaining witnesses could or would testify under oath to their

statements set forth in the police reports. Nor did it point to

any other evidence that supported the dismissed 2002 and 2003

charges or otherwise rebutted the prosecutors' contemporaneous

statements that they could not be proven. The Commonwealth did

argue that the judge should admit in evidence certain

"admissions" made by the petitioner regarding the dismissed 2002

and 2003 charges, but in none of those statements did the

petitioner admit to having engaged in a sexual assault or other

nonconsensual sexual conduct.11

Instead of showing why the alleged facts were independently

admissible, the Commonwealth contended that it was "up to [the

petitioner] to highlight any deficiencies in the [qualified

examiners'] testimony and reports through cross-examination."

Cross-examination, however, was not a solution to this problem.

As discussed, the factual information about the dismissed 2002

and 2003 charges was excluded from evidence at trial, at least

through the admitted qualified examiners' reports and testimony

11Nearly all of the petitioner's statements regarding the dismissed 2002 and 2003 charges were ultimately redacted in the expert reports admitted at trial.

23

on direct examination. See Markvart, supra at 338. Crossexamination that addressed the reliability of these allegations

would have exposed the jury to the excluded information and

opened the door to further discussion of the information on

redirect. See Matter of P.R., 488 Mass. 136, 143 (2021);

Commonwealth v. Piantedosi, 478 Mass. 536, 543-544 (2017).

Indeed, the judge twice indicated that the qualified examiners

could testify about the dismissed 2002 and 2003 charges on

redirect if the petitioner raised them during cross-examination.

See Markvart, supra at 338-339.

We recognize that, under Markvart, "there is nothing about

the fact that the earlier case" was dismissed or nol prossed

that "would automatically preclude the qualified examiner from

relying on those materials consistent with the principles

articulated" in Department of Youth Servs. Markvart, 437 Mass.

at 338. At the same time, we reject any suggestion that hearsay

statements in a police report are always "independently

admissible" under Markvart, simply because they reflect what a

complainant or other witness told the police at the time about

the alleged offense. Were that the case, there would never be

any limitation on qualified examiners' reliance on alleged facts

in police reports for dismissed sexual offense charges -- a

premise that the court in Markvart implicitly rejected when it

concluded that it could not "make any determination as to the

24

propriety of an expert's reliance on those materials in [that]

particular case" based on the record before it. Id. at 337-338.

The court further specified that a qualified examiner's reliance

on police reports and witness statements must be "consistent

with the requirements and limitations" of Department of Youth

Servs., Markvart, supra at 339, and noted that "a voir dire may

be required to determine whether there would, at the time of

trial, still be a way that the facts set forth in the documents

could be admitted in evidence." Id. at 337 n.5, citing

Department of Youth Servs., 398 Mass. at 532. In the absence of

such a threshold determination here, there was an inadequate

basis for the judge to conclude that the alleged facts were

independently admissible, and the admission of the expert

evidence that relied on them was therefore error under

Department of Youth Servs. and Markvart.12

c. Prejudice. Having concluded there was error, we have

no doubt that the error was prejudicial because it allowed the

qualified examiners (as well as the CAB member) to form their

opinions and then testify that the petitioner suffers from

12That the reports and testimony of qualified examiners need not generally satisfy the standards for the reliability of expert evidence under Lanigan, 419 Mass. at 25-26, citing Daubert, 509 U.S. at 589-595, only reinforces the importance of ensuring that other evidentiary requirements, like those under Department of Youth Servs. and Markvart, are met. See Bradway, 62 Mass. App. Ct. at 283-290.

25

sexual sadism disorder -- at a trial to decide whether he

remains a sexually dangerous person. To find that the

petitioner remained a sexually dangerous person, the jury had to

determine that he "[(1)] has been convicted of a sexual offense,

[(2)] suffers from a mental abnormality or personality disorder

that renders him a menace to the health and safety of others,

and [(3)] is likely to engage in sexual offenses if not

confined." Commonwealth v. Fay, 467 Mass. 574, 580, cert.

denied, 574 U.S. 858 (2014), citing G. L. c. 123A, §§ 1, 14. We

are not persuaded by the Commonwealth's argument that, "[e]ven

if admission of the diagnosis of a sexual sadism disorder was

error," the petitioner cannot show prejudice because he was also

"diagnosed with other specified personality disorder with

antisocial, narcissistic, and paranoid traits." Where the issue

is sexual dangerousness, there is a world of difference between

having a personality disorder and being diagnosed as a sexual

sadist. A jury could quite reasonably conclude that only the

latter, not the former, justifies a person's continued civil

commitment.

Furthermore, in the absence of the sexual sadism disorder

diagnosis, the jury would have been left with inconsistent

reports by the qualified examiners, with one opining that the

petitioner's decades-old convictions and institutional

misbehavior partially support diagnoses of frotteuristic

26

disorder and exhibitionistic disorder, and the other declining

to diagnose the petitioner with a "full . . . clinical

personality disorder" and characterizing her diagnosis as "Other

Specified Personality Disorder with Antisocial Traits."

Lastly, their mental health diagnoses aside, both qualified

examiners relied on the timing of the dismissed 2002 and 2003

charges to support their opinions that the petitioner is likely

to engage in future sexual offenses. For example, in her

report, Dr. Colista cited the petitioner's 2006 convictions for

a nonsexual offense (with the phrase "with underlying sexual

offending details" redacted) as support for her (unredacted)

conclusion that he "continued to offend despite sanctions and

. . . in places with a high risk of detection and with a notable

degree of violence." For her part, Dr. Cookman, in her report,

asserted that the petitioner "continued sexually offending"

after his 1977 guilty plea, "with multiple additional legal

interventions between offenses" -- an assertion that is

difficult to square with the fact that the petitioner was last

convicted of a sexual offense in 1991, unless the alleged facts

underlying the dismissed 2002 and 2003 charges are considered.

Viewing the evidence as a whole, we cannot say that the

qualified examiners' reliance on the alleged facts concerning

the dismissed 2002 and 2003 sexual offense charges "did not

27

influence the jury, or had but very slight effect" (citation

omitted). Mackie, 100 Mass. App. Ct. at 88.13

Conclusion. For the reasons detailed above, we vacate the

judgment, set aside the verdict, and remand this case for a new

trial.

So ordered.

13 Because we conclude that the admission of the expert opinions was prejudicial error under Department of Youth Servs., 398 Mass. at 531, and Markvart, 437 Mass. at 339, to the extent they relied on the alleged facts regarding the petitioner's dismissed 2002 and 2003 charges, we do not address his argument that it also violated his rights to due process under the Fifth and Fourteenth Amendments to the United States Constitution and art. 12 of the Massachusetts Declaration of Rights. See SCVNGR, Inc. v. Punchh, Inc., 478 Mass. 324, 330 (2017) ("it is canonical that courts should, where possible, avoid unnecessary constitutional decisions"). We note that in Markvart, the Supreme Judicial Court stated that the "requirements and limitations" imposed by the evidentiary rule in Department of Youth Servs. "suffice to address due process concerns and the right of confrontation." Markvart, supra at 339. See Mackie, 100 Mass. App. Ct. at 85 n.9. The court, however, has since modified that view. See Gordon, 496 Mass. at 581 (holding that evidentiary rule "does not pass constitutional muster" under confrontation clause of Sixth Amendment to United States Constitution "where an expert testifies to an opinion that depends on the truth of the testimonial hearsay of a nontestifying analyst").