Lindsay Clancy Murder Trial Plunged Into Chaos as Holdout Juror Fight Reaches Massachusetts’ Highest Court

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After seven days and more than 36 hours of deliberation, the jury weighing murder charges against Lindsay Clancy remained deadlocked Friday over what defense attorney Kevin Reddington described as a single holdout juror refusing to follow the law. Reddington told Judge William Sullivan the jury foreperson had reported one juror “admitted doubt but refused to join the other 11” in reaching a verdict, and asked Sullivan to remove that juror from the panel. Sullivan denied the request, telling the jury instead that they were required to “follow the law whether they like it or not.”

With the jury reporting deadlock for a third time Friday morning, Sullivan indicated he was prepared to declare a mistrial — only for Reddington to request, and receive, a one-hour stay to file an emergency appeal with the Massachusetts Supreme Judicial Court. Reddington argued jurors should first be polled on whether they had reached verdicts on any of the three murder counts, warning that if they had, double jeopardy protections could bar prosecutors from retrying Clancy on those specific charges.

Details & Background

Clancy, 36, of Duxbury, admitted to drowning her three children — 5-year-old Cora, 3-year-old Dawson, and 8-month-old Callan — in January 2023 before attempting suicide herself. She has pleaded not guilty by reason of insanity, with her defense arguing she suffered severe postpartum psychosis at the time of the killings and was not criminally responsible for her actions under Massachusetts law. Prosecutors have argued she understood the wrongfulness of her actions and should be held criminally responsible on all three counts of first-degree murder.

The stakes of the jury’s decision are severe: a guilty verdict would mean life in prison without the possibility of parole, while a finding of not criminally responsible would send Clancy to a state psychiatric facility rather than prison. The case has drawn national attention over its unusually granular window into postpartum mental illness and the legal threshold for criminal responsibility, with the defense’s request for a split-verdict process — allowing jurors to reach conclusions on individual counts — adding a rare procedural wrinkle as the case heads to the state’s highest court.

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Assistant District Attorney Jennifer Sprague pushed back forcefully against the defense’s removal request, telling the court there was “no indication of impartiality or bias or refusal to deliberate” on the part of the juror in question. Reddington, for his part, argued the holdout juror represented “a clear and present danger” to reaching any verdict at all, describing the juror’s position as “intractable, regardless of proof beyond a reasonable doubt.”

Judge Sullivan, who has now twice declined to intervene in the jury’s internal deliberations, has been careful to avoid the appearance of favoring either side, telling the court at one point that he did not feel it was “proper for me to side with one side or the other in deliberations.” That posture has left the case’s fate almost entirely in the jury’s hands — and now, in the short term, in the hands of the Supreme Judicial Court weighing Reddington’s emergency appeal.

Why This Matters to You

The Clancy case has become a national flashpoint in the debate over how the justice system handles severe postpartum mental illness, and the outcome could shape how similar insanity-defense cases are argued going forward. A single juror’s holdout — and the extraordinary legal maneuvering it has triggered, up to and including an emergency petition to the state’s highest court — underscores just how high the stakes are when a jury cannot agree.

Whatever the Supreme Judicial Court decides in the coming hours, the case is likely headed toward one of two outcomes: a fractured verdict that could still face appeal, or a full mistrial that would force prosecutors to decide whether to retry Clancy from scratch. Either way, a case already marked by tragedy is now testing the outer edges of Massachusetts criminal procedure in real time.