The Lindsay Clancy Trial: A Cruel, Insensitive, and Out-of-Touch Prosecution

Lindsay Clancy, a labor and delivery nurse from Duxbury, was tried in Plymouth Superior Court in 2026 on three counts of murder in the first degree for the January 2023 deaths of her children, Cora, age five, Dawson, age three, and Callan, age eight months. She did not dispute that she caused their deaths. Her defense was lack of criminal responsibility based on postpartum psychosis. After seven days of deliberations, the jury could not reach a unanimous verdict, and Judge William Sullivan declared a mistrial on September 4, 2026.

The disputed question was whether postpartum psychosis deprived Clancy of the substantial capacity either to appreciate the wrongfulness of her conduct or to conform her conduct to the law. Kevin Reddington argued that command hallucinations left her without control over her actions. A defense forensic psychiatrist testified that Clancy heard a voice directing the killings. The Commonwealth argued that she planned the deaths, arranged for her husband to be out of the house, understood the wrongfulness of her conduct, and did not have the condition the defense described.

This post examines how the Commonwealth chose to present that case. In opening and closing, the prosecution told the jury that Clancy was a murderer who coldly wanted her children dead. The Commonwealth called witnesses who testified that the injuries to her neck and wrists were consistent with an insincere attempt to die by suicide. Massachusetts law permitted those choices. In Attorney Serpa’s assessment, those choices were cruel, insensitive, and out-of-touch, and they amounted to a serious tactical error.

After the killings, Clancy cut her neck and wrists and went out a second-story window. She survived and is paralyzed. The Commonwealth’s motive theory was that she wanted to die and saw her children as the reason she remained alive, so ending their lives cleared the way for her own death. At the same time, the prosecution asked jurors to conclude that the wounds were shallow by design and that the suicide attempt was staged.

The two theories were inconsistent. A mother who killed her children to clear the way for her own death, and a suicide attempt the Commonwealth characterized as staged, cannot both be true without an explanation that reconciles them. The Commonwealth did not provide one. That inconsistency illustrates the cost of using every available argument without considering what the combination did to the prosecution’s credibility or to its treatment of Clancy and her family.

What the Law Allowed the Commonwealth to Argue

Massachusetts uses the standard adopted in Commonwealth v. McHoul, 352 Mass. 544 (1967). A person is not criminally responsible if, as a result of mental disease or defect, that person lacked substantial capacity either to appreciate the wrongfulness of the conduct or to conform the conduct to the requirements of law.

Once the defense is raised and the evidence would permit a reasonable doubt, the Commonwealth must prove criminal responsibility beyond a reasonable doubt. Commonwealth v. Keita, 429 Mass. 843, 849 to 850 (1999). The Supreme Judicial Court has described what that burden requires. The Commonwealth must prove that the defendant had no mental disease or defect, or, failing that, that no mental disease or defect deprived the defendant of substantial capacity. Commonwealth v. Lawson, 475 Mass. 806 (2016).

Lawson also identifies how a prosecutor may meet that burden. The Commonwealth may rely on the circumstances of the offense, including evidence that the defendant planned the offense, acted on a rational motive, made rational decisions during the offense and in avoiding capture, and attempted to conceal what happened. It may also rely on the defendant’s words and conduct before, during, and after the offense, including evidence of malingering.

So the Commonwealth in this case did what the case law invites a prosecutor to do. The planning argument, the timing argument, and the suggestion that Clancy overstated her condition all sit within Lawson. The question is not whether those arguments were permitted. The question is whether making them at that volume, to this jury, about this defendant, served the Commonwealth’s interest in a conviction.

A Cruel, Insensitive, and Out-of-Touch Posture

Sympathy is not an element of any offense, and no juror is asked to weigh it. But jurors are people, they sit ten feet from the defendant for weeks, and they form a judgment about whether the account they are being given matches the person in front of them. Whether a particular jury will accept a hard argument is something a trial lawyer begins assessing during jury selection, long before the evidence closes.

Lindsay Clancy is an obviously sympathetic defendant. She lost all three of her children. She attempted to die by suicide and survived. Her mental illness was documented before the killings by the medications she had been prescribed and the treatment she had sought. She has been left paralyzed. Whatever a juror concludes about criminal responsibility, none of that is in dispute.

Against those facts, telling a jury that this woman coldly wanted her own children dead asks it to accept something that does not correspond to what it can see. The Commonwealth made that argument at the opening of the trial, before the jury had heard any evidence about her illness, and made it again at the close. In the assessment of Attorney Joe Serpa, the Commonwealth misread the courtroom it was standing in. Jurors notice cruelty, and they hold it against the party who displays it.

The juror interviews now provide evidence of how some members of the panel received that presentation. Their criticism supports the concern that the Commonwealth’s treatment of Clancy weakened its persuasiveness. The interviews also require a more precise account of the deadlock: the foreperson described eleven jurors favoring acquittal by reason of insanity and a single juror resisting that result.

The Suicide Attempt

The most costly decision was the treatment of the suicide attempt. The Commonwealth called witnesses who testified that her injuries were consistent with an insincere attempt to die by suicide, and argued that Clancy killed her children because they were the reason she was still alive. Reddington answered that she had made a very significant suicide effort, and told the jury that the Commonwealth had taken the soul out of his client.

The Commonwealth built that argument on first responders, who described the injuries to her neck and wrists as superficial and said the wounds were not bleeding when they reached her. From that testimony the Commonwealth asked the jury to find that the attempt was staged. Commentators covering the trial read the Commonwealth’s position as an accusation that she could take her children’s lives but lacked the resolve to take her own.

That testimony is the clearest instance of the same error. A woman who cut her own neck, cut her wrists, and then went out a second-story window did not make an insincere attempt to die by suicide. Asking twelve jurors to find otherwise requires them to disbelieve the one piece of evidence that is visible from the jury box, because the wheelchair was in front of them every day of the trial.

A jury that concludes the Commonwealth is being unfair about one thing will wonder what else the Commonwealth is being unfair about. The doubt does not stay confined to the point that produced it.

What a More Measured Prosecution Looks Like

The Commonwealth could have conceded everything that was not in dispute. It could have acknowledged the severity of the illness, accepted the suicide attempt as real, and expressed regret for what happened to this family. It could then have argued the one issue that decides the case: that even a genuinely and severely ill person may retain substantial capacity to appreciate wrongfulness, and that the evidence of planning showed she retained it here.

That version of the case gives up nothing the Commonwealth needed. It concedes facts the jury was going to accept anyway, and it spends the credibility saved on the single contested question. A prosecutor who is visibly fair about the parts that hurt is far more persuasive on the contested part, and a closing argument built that way is harder for a defense lawyer to answer. Attorney Serpa believes a prosecution presented that way would have had a better chance of the verdict the Commonwealth wanted.

Where the Case Stands

On Friday, September 4, after the jury reported again that it could not agree, Judge Sullivan announced that he would declare a mistrial. Kevin Reddington objected and asked the court to poll the jurors about partial verdicts, arguing that jeopardy had attached to any charge the jury had already resolved. The judge gave the defense one hour to file an emergency petition with the Supreme Judicial Court.

Earlier that day the same judge had taken the juror dispute up in camera and had neither excused nor disqualified the juror. Those developments are covered in the firm’s post on when Massachusetts law permits removal of a deliberating juror.

A mistrial is not an acquittal, and the Commonwealth ordinarily may retry a case that ends in a deadlocked jury. A second trial would begin again with pretrial motions and evidentiary rulings. If this case is tried again, the Commonwealth will have the same evidence, the same law, and one advantage it did not have the first time. It will know how a jury responded to the way it chose to talk about Lindsay Clancy.

What the Mistrial Rules Mean Here

Whether the Commonwealth may try Lindsay Clancy again depends on two questions. Was there a manifest necessity for ending the first trial, and did the defense object or consent? Reddington objected, asked for a stay, and went to the Supreme Judicial Court. Nothing in that sequence reads as consent, so the question is preserved rather than waived.

On the first question the Commonwealth is in a strong position. A jury that genuinely cannot agree is the prototypical example of manifest necessity. Commonwealth v. Ellis, 432 Mass. 746, 751 (2000). Jeopardy does not end when a jury is discharged for inability to agree. Richardson v. United States, 468 U.S. 317, 326 (1984). This jury deliberated for roughly seven days and reported an impasse more than once.

The statute pushed in the same direction. Where a jury report twice after due and thorough deliberation that they are deadlocked, they shall not be sent out again without their own consent, unless they ask the court for some further explanation of the law. G.L. c. 234A, § 68C. By the third report the judge had little room left to keep the jury working.

The partial verdict request faced a rule rather than a discretionary call. Clancy faces three counts of murder in the first degree, and each has lesser included offenses. Where counts are charged as separate indictments, a jury may return verdicts on some and deadlock on others. Within any single indictment, a judge is prohibited from asking whether the jury has settled on a lesser offense. Commonwealth v. Roth, 437 Mass. 777, 787 (2002).

Public accounts of an eleven to one division do not change the analysis either. A verdict is effective only when the jurors affirm it in open court, and posttrial descriptions of what a jury discussed in private cannot convert a deadlock into an acquittal. Read v. Commonwealth, 495 Mass. 312 (2025).

The emergency petition to a single justice under G.L. c. 211, § 3 did not succeed. Relief under that statute requires both a substantial claim that substantive rights were violated and an error that cannot be remedied under the ordinary review process, and interlocutory rulings in criminal cases are not ordinarily reviewed because the regular appellate process protects the defendant. Morrissette v. Commonwealth, 380 Mass. 197, 198 (1980). The full framework, including every ground for a mistrial and the consent rules that decide whether a case can be tried twice, is set out on the firm’s page on mistrials in Massachusetts criminal cases.

In the assessment of Attorney Serpa, that standard is the likely reason the petition was denied rather than any view of the merits. The single justice did not decide whether double jeopardy bars a second trial. That question survives, and it can be raised by a motion to dismiss before any retrial.

What Happens After a Verdict of Not Guilty by Reason of Insanity

A verdict of not guilty by reason of insanity does not send a person home. General Laws chapter 123, section 16 governs what follows. The court may order hospitalization for examination, and within sixty days the district attorney or the facility may petition for commitment.

If the court commits the person, the initial order lasts six months, and later orders may be renewed for successive one-year periods on the findings the statute requires. The district attorney receives notice of the commitment proceedings and may be heard. The result is a system of confinement and periodic judicial review, not release.

Mental Impairment and Specific Intent

A defendant who does not meet the full standard for lack of criminal responsibility may still offer evidence of mental impairment. Under Commonwealth v. Grey, 399 Mass. 469 (1987), a jury may consider evidence of a defendant’s mental impairment in deciding whether the Commonwealth has proved a required specific intent. In a murder case, that evidence can bear on premeditation and on the intent element of malice. This is not a complete defense, but it can lower the degree of a conviction or defeat a charge that requires a particular state of mind.

Key Takeaways

• A mistrial from a hung jury is not an acquittal. The charges remain and a retrial is usually permitted.
• The insanity defense in Massachusetts is the lack of criminal responsibility under the McHoul standard, and the Commonwealth must prove criminal responsibility beyond a reasonable doubt.
• A verdict of not guilty by reason of insanity leads to hospitalization and possible commitment under General Laws chapter 123, section 16, not release.

The Jurors’ Accounts After the Mistrial

On September 8, NBC10 Boston interviewed foreperson Roni Carlson and jurors Kellie Farina and Paula Devlin. In its September 9 report on the interviews, NBC10 stated that all three jurors criticized the prosecution. Farina described the prosecutors as cold and lacking compassion. “I just found it to be harsh. Very, very harsh,” she said. The jurors regarded Kevin Reddington’s presentation as more authentic.

Carlson identified Clancy’s journals and her former mother-in-law’s testimony as evidence that Clancy loved her children. For Carlson, that evidence supported the defense’s account of Clancy’s mental condition. The jurors also described the distress of listening to Patrick Clancy’s 911 call, which they replayed during deliberations. Their doubts about criminal responsibility coexisted with a full appreciation of what had happened to the children.

The NBC10 interviews also described deliberations that changed jurors’ positions. The station reported that the discussions persuaded three jurors to favor acquittal by reason of insanity. Carlson said the remaining holdout acknowledged reasonable doubt but still declined to agree to that verdict. NBC10 sought his response, but its report did not include his account.

On September 9, CBS Boston published a separate interview with juror No. 5. She said the prosecution lacked a “figurative smoking gun” and that the evidence left too much uncertainty for a guilty verdict. She said she began deliberations believing Clancy was criminally responsible, but ultimately concluded that Clancy was experiencing a profound mental health crisis. She also defended the holdout in part, explaining that several jurors entered deliberations firmly committed to their positions.

The interviews establish what the speakers now say about their experience. They do not establish every juror’s reasoning or isolate the prosecution’s tone as the cause of the mistrial. The holdout juror has not provided his account. Still, the criticism comes from people who heard the evidence and participated in deliberations. A prosecutor asking jurors to reject a mental illness defense must address the evidence of illness and explain the inference the Commonwealth wants them to draw. Repeatedly emphasizing the brutality of an admitted act does little to resolve the disputed question of the defendant’s mental capacity. The jurors’ reactions give the Commonwealth a concrete reason to reconsider how it presents the case if it seeks another trial.

This post is for general informational purposes only and is not legal advice. It is based solely on public court proceedings, public reporting, and published decisions and does not reflect any non-public information. Reading it does not create an attorney-client relationship. This may constitute attorney advertising.