A Superior Court jury convicted the defendant, Wayne C. Tassone, of unarmed robbery, in violation of G. L. c. 265, § 19 (b); and assault and battery, in violation of G. L. c. 265, § 13A (a). The issue on appeal is whether an expert witness may offer an opinion that the deoxyribonucleic acid (DNA) profile generated from a known saliva sample of the defendant matched a DNA profile obtained from a swab taken from eyeglasses that were left at the scene of a robbery where the expert had no affiliation with the laboratory that conducted the DNA testing of the eyeglasses swab. We conclude that an opinion regarding the results of DNA testing is admissible only where the defendant has a meaningful opportunity to cross-examine the expert witness about the reliability of the underlying data produced by such testing. Here, the defendant was deprived of a meaningful opportunity for such cross-examination because the analysts who generated the DNA profiles through DNA testing did not testify at trial, and the expert witness who offered the opinion of a match had no affiliation with the laboratory that tested the crime scene sample. Because the defendant preserved his objection to the admission of the expert opinion and its admission was prejudicial, we vacate the defendant’s convictions and remand for a new trial.
Background. We summarize the evidence at trial. Robert Brodeur worked as an assistant manager at a small variety store in Pittsfield. On June 22, 2009, at approximately 5:30 p.m., the only customer in the store was a white male, with short blonde hair, wearing a black T-shirt, black shorts, and eyeglasses. The man went to the store counter to purchase juice. When Brodeur opened the door to the cash register, the man tried to reach into the register to take the money; when that failed, he pulled the register away from Brodeur and threw it on the floor. Brodeur jumped over the counter and attempted to push the man out the door, but the man pushed Brodeur to the floor. While Brodeur was on the floor, the man grabbed $350 in cash and fled. When the police responded to the scene, they observed several items on the floor, including a pair of eyeglasses that did not belong to Brodeur.
On June 23, the defendant told his then-fiancée, Brenda Streit, that he had been on a “crack” cocaine binge and was entering a local inpatient facility to treat his drug problem. In a subsequent telephone conversation, Streit told the defendant that she was going to the police department to look at a pair of eyeglasses, and the defendant told her that she knew what she had to do. When Streit asked him if he had committed the robbery, the defendant replied, “What do you think?” He told her that he had committed the robbery because of his drug problem.
On June 24, Brodeur was shown a photographic array of eight photographs and picked out the photograph of the defendant as the person who committed the robbery. He initially was eighty per cent sure but, after he “kept looking at it,” said he was “99 per cent sure.”
Both Moore and Streit identified the eyeglasses found at the scene of the robbery as belonging to the defendant, noting that they looked like the defendant’s eyeglasses and had paint specks on them. The defendant, however, shared a number of nonprescription eyeglasses with his brother, Nathan Hunt, and Hunt had a pair that looked “just like” the eyeglasses found at the crime scene. Hunt was the same height and body shape as the defendant, and also had a drug problem with both heroin and crack cocaine. Although Hunt was not employed by Moore’s company, the defendant brought Hunt to the home whose exterior he was painting to assist with the paint work.
With respect to the DNA testing, a police officer used a buccal swab to obtain a saliva sample from the defendant, which was sent to the State police crime laboratory. At the defendant’s trial, no one from the State police crime laboratory testified regarding the analysis of that saliva sample to generate a known DNA profile of the defendant.
Lynne Sarty, a chemist in the State police crime laboratory, took a moistened swab and rubbed it on the areas of the eyeglasses that would likely come into contact with the wearer’s skin, such
The defendant appealed from his convictions and the Appeals Court affirmed. Commonwealth v. Tassone,
Discussion. 1. The Williams opinion. In Williams,
At the bench trial of the defendant in Williams, the prosecutor called a forensic analyst at the State police laboratory, who testified that she developed a DNA profile from a known blood sample of the defendant. Id. The prosecutor did not call as a witness any employee of Cellmark who participated in developing the DNA profile taken from the semen on the vaginal swabs, or who knew the procedures and protocols used by Cellmark in developing a DNA profile. Id. at 2229-2230. Instead, the prosecutor called an expert witness in forensic biology and DNA analysis from the State police laboratory who “admitted she had not seen any of the calibrations or work that Cellmark had done in deducing a male DNA profile from the vaginal swabs,” but trusted Cellmark to do reliable work because it was an accredited laboratory. Id. at 2230. Over objection, this expert testified, based on her comparison of the two DNA profiles, that there was a “match” between the DNA profile found in semen from the vaginal swabs taken from the victim and the known DNA profile of the defendant, and that the probability of a random match was one in 8.7 quadrillion in the black population, one in 390 quadrillion in the white population, and one in 109 quadrillion in the Hispanic population. Id. at 2230, 2236. The Cellmark report was neither admitted in evidence nor shown or read to the judge; moreover, it was not identified as a source of any of the expert’s opinions. Id. at 2230.
In considering the admissibility of the expert’s testimony, five of the nine Supreme Court Justices concluded in Williams that the judge did not err in admitting this evidence, with the reasoning of the plurality opinion of Justice Alito, joined by three other Justices, differing from that of the concurring opinion authored by Justice Thomas. See id. at 2244; id. at 2252 (Breyer, J., concurring); id. at 2255 (Thomas, J., concurring in the judgment). The plurality opinion concluded that the evidence was admissible on two independent grounds. First, the plurality determined that the expert witness’s statement that the DNA profile generated by Cellmark that matched the defendant’s profile was “found in
Second, the plurality concluded that even if the expert’s statement were admitted for its truth, there still would be no confrontation clause violation because Cellmark’s DNA report regarding the vaginal swab “plainly was not prepared for the primary purpose of accusing a targeted individual.” Williams,
“Here, the primary purpose of the Cellmark report, viewed objectively, was not to accuse [the defendant] or to create evidence for use at trial. When the [Illinois State police laboratory] sent the sample to Cellmark, its primary purpose was to catch a dangerous rapist who was still at large, not to obtain evidence for use against [the defendant], who was neither in custody nor under suspicion at that time. Similarly, no one at Cellmark could have possibly known that the profile that it produced would turn out to inculpate [the defendant] — or for that matter, anyone else whose DNA profile was in a law enforcement database. Under these circumstances, there was no ‘prospect of fabrication’ and no incentive to produce anything other than a scientifically sound and reliable profile.”
Id. at 2243-2244, quoting Michigan v. Bryant,
Neither of these independent grounds, however, was adopted by a fifth Justice. Justice Thomas rejected the plurality’s contention that the statement regarding Cellmark testing was not admitted for its truth, declaring that “there was no plausible reason for the introduction of Cellmark’s statements other than to
The dissenting opinion of Justice Kagan, joined by three other Justices, concluded that the expert witness’s testimony that the victim’s vaginal swab contained DNA that matched the defendant’s DNA profile was offered for its truth and violated the confrontation clause, id. at 2270-2272 (Kagan, J., dissenting), noting that “the prosecution introduced the results of Cell-mark’s testing through an expert witness who had no idea how they were generated.” Id. at 2265 (Kagan, J., dissenting). The dissent also rejected the plurality’s “primary purpose test.” Id. at 2273 (Kagan, J., dissenting). The dissent asserted that, “in all except its disposition, [the plurality] opinion is a dissent: Five Justices specifically reject every aspect of its reasoning and every paragraph of its explication.” Id. at 2265 (Kagan, J., dissenting). The dissent also rejected Justice Thomas’s argument that the Cellmark report lacked the “formality and solemnity” to be “testimonial.” Id. at 2275-2277 (Kagan, J., dissenting). According to the dissent, the consequence of the Court’s judgment reached by five Justices is to leave “significant confusion in [its] wake.”
2. Application of the Williams opinion to this case. We dis
“The dissent’s argument would have force if [the defendant] had elected to have a jury trial. In that event, there would have been a danger of the jury’s taking [the expert witness’s] testimony as proof that the Cellmark profile was derived from the sample obtained from the victim’s vaginal swabs. Absent an evaluation of the risk of juror confusion and careful jury instructions, the testimony could not have gone to the jury.”
Williams,
3. Our common law of evidence. We noted in Commonwealth v. Greineder,
Second, our common law of evidence requires that the defendant have a meaningful opportunity to cross-examine the expert about her opinion and the reliability of the facts or data that underlie her opinion. See Greineder,
Where an expert in a homicide case offers an opinion regarding the cause of death, a defendant will generally have a meaningful opportunity to cross-examine the expert witness regarding possible flaws in the opinion based on the underlying autopsy report and notes, and photographs taken during the autopsy, regardless of whether the expert conducted the autopsy or was employed in the medical examiner’s office that did. See, e.g., Commonwealth v. Nardi,
In Greineder,
Similarly, in Barbosa,
Here, in contrast, at the hearing on the defendant’s motion in limine where the judge denied the defendant’s challenge to the admissibility of Roy’s opinion, Roy testified that she was a chemist at the State police laboratory and that Cellmark, not her laboratory, had generated the DNA profile from the eyeglasses found at the scene of the crime. Roy was able to confirm from the electropherogram sent by Cellmark that it reflected the DNA profile reported by Cellmark, but she was not in a position to confirm that the DNA profile was from the eyeglasses swab; she knew only that Cellmark said that it was. Further, there was no evidence that Roy previously had been employed by Cellmark, had any personal knowledge of the chain-of-custody or evidence-handling protocols used by Cellmark, or had seen any of the worksheets generated by Cellmark during the testing.
Under these circumstances, we conclude that the defendant did not have a meaningful opportunity to cross-examine Roy regarding the laboratory work, procedures, or protocols performed by Cellmark, or as to the reliability of the Cellmark data on which her opinion of a “match” with the defendant’s
The prosecution may not admit powerful evidence of a DNA match against a defendant and deny the defendant a meaningful opportunity to challenge the reliability of the facts or data on which the opinion rests by failing to call an expert witness affiliated with the laboratory that tested the sample connected to the crime scene. We know of no case before Williams where the prosecution attempted to offer an opinion of a DNA profile match without calling the DNA analyst who conducted the testing of the crime scene DNA or a knowledgeable employee from that laboratory. At least in State courts in Massachusetts, the Williams opinion does not open the door to such a practice. Regardless of whether the Supreme Court ultimately interprets the confrontation clause to permit the admission of such an opinion under circumstances that effectively deny the defendant any meaningful opportunity for cross-examination, its admission in our courts is barred by the right of confrontation in our common law of evidence. In other words, if the Commonwealth sends the crime scene DNA to Cellmark for analysis, and seeks to offer in evidence an opinion that the crime scene DNA matches the DNA of the defendant, it will need, at a minimum, to call an expert witness from Cellmark.
4. Prejudicial error. The defendant objected to the admission
Apart from the DNA evidence, the most compelling evidence against the defendant was the eyewitness identification by Bro
Conclusion. We reverse and vacate the defendant’s convictions, and remand for a new trial.
So ordered.
Notes
The dissent’s concern was well founded. “When a fragmented Court decides a case and no single rationale explaining the result enjoys the assent of five Justices, ‘the holding of the Court may be viewed as that position taken by those Members who concurred in the judgments on the narrowest grounds ....’” Marks v. United States,
We also note that the opinion offered by Tiffany Roy — “[t]hat the [deoxyribonucleic acid (DNA)] profile generated from the known saliva sample from [the defendant] matched the major male profile obtained from the swab of the eyeglasses” — was not accompanied by an opinion regarding the mathematical probability that another person possessed the same DNA profile. We stated in Commonwealth v. Barbosa,
Because we conclude that the admission of Roy’s opinion was prejudicial, we need not determine whether its admission violated the right of confrontation in art. 12 of the Massachusetts Declaration of Rights, and therefore should be reviewed under the standard applied to constitutional error: harmless beyond a reasonable doubt. See Commonwealth v. Vinnie,
