Three jurors from the Lindsay Clancy murder trial are breaking their silence about a lone holdout who they say admitted to having reasonable doubt but still refused to deliver a not-guilty-by-reason-of-insanity verdict, a standoff that ended in a mistrial after nearly 40 hours of deliberation.
The foreperson told NBC10 Boston that the holdout juror's concession came during the final stretch of six and a half grueling days inside the jury room at Plymouth Superior Court in Plymouth, Massachusetts. She said she had already started filling out the verdict forms, three of them, each bearing her signature, when the holdout reversed course.
The account, the first public description of what happened behind closed doors, paints a picture of a jury that reached the brink of unanimity only to have one member refuse to follow the legal standard he appeared to accept. It raises pointed questions about whether the system worked as intended, and whether Lindsay Clancy, her victims' memory, and eleven other jurors were all denied a resolution by a single person's refusal to apply the law.
Clancy, a Massachusetts mother and former nurse, admitted to killing her three young children, ages five, three, and eight months, using exercise resistance bands in their Duxbury, Massachusetts, home in January 2023. She then jumped from a second-story window and is now paralyzed from the waist down. Her defense team did not dispute that she killed the children. They argued she was suffering from severe postpartum psychosis at the time and pleaded not guilty by reason of insanity.
Prosecutors maintained she was criminally responsible. Plymouth County District Attorney Timothy Cruz described the case as involving "cruel, calculated killings of three innocents."
The jury deliberated for roughly 38 to 40 hours across seven days before informing Judge William Sullivan they were hopelessly deadlocked. The split was 11, 1 in favor of acquittal by reason of insanity. Sullivan declared a mistrial.
The foreperson's account to NBC10 Boston describes a moment that must have felt like a breakthrough, and then wasn't. She recalled that the holdout juror admitted he had reasonable doubt about Clancy's criminal responsibility:
"He admitted he had reasonable doubt and I started filling out the forms, I was so excited."
She continued:
"There were three forms I had to fill out, and I started filling them out. I wrote my signature on each one."
But the holdout then said something that stopped the process cold. As the foreperson recounted his words:
"But I'm still not going to say that she's not guilty by reason of insanity."
That distinction, accepting reasonable doubt while still refusing to apply it to the insanity verdict, sits at the center of the controversy. Under the law, a juror who has reasonable doubt about the defendant's criminal responsibility is supposed to vote accordingly. The holdout, by the foreperson's account, acknowledged the doubt and then simply declined to follow it to its legal conclusion.
Two additional jurors spoke to NBC10 Boston and described a deliberation room where eleven people tried every tool available to reach the twelfth, and failed.
One juror described the holdout's demeanor bluntly:
"He was very arrogant. He really did not take anything that anybody said."
That juror also noted that nurses serving on the panel tried to address the holdout's questions about Clancy's medications. Toxicology reports from South Shore Hospital had been admitted into evidence. The nurses spoke to the medical specifics directly.
"There were nurses on the jury. Yes, they spoke to that specific thing. That was a question that he had, and he just completely disregarded the information that they gave him."
A third juror described the physical and emotional toll of trying to reason with someone who would not participate in the process:
"Every one of us in the hours of our frustration would get up and walk the room because you just couldn't sit anymore. He would not interact with us and try to understand."
That same juror said the panel read Judge Sullivan's instructions on reasonable doubt to the holdout "on numerous occasions." The holdout, this juror said, "had the hardest time getting over the fact that Lindsay viciously killed her children." The emotional weight of the crime, in other words, appeared to override the legal framework the juror had sworn to follow.
The foreperson took an additional step. She wrote a note to Judge Sullivan raising concerns that one juror had expressed reasonable doubt but would not agree to a verdict. The contents of that note have not been made public, and it is unclear what, if any, action the judge took in response before ultimately declaring the mistrial.
Defense attorney Kevin Reddington did not mince words after the mistrial. He told reporters the jury "know that they were robbed by one man for whatever his agenda was, who stole seven weeks of the life of these other jurors." Reddington filed an emergency appeal to the Massachusetts Supreme Judicial Court, accusing the holdout of bias against people with debilitating mental illness. The state's highest court declined the appeal.
Prosecutors pushed back on the characterization. Jennifer Sprague, a prosecutor on the case, argued that what happened in the jury room was simply deliberation, not misconduct:
"What we have here is a note that indicates a disagreement about how to weigh the evidence. And that's deliberation."
That framing has a surface logic. Jurors are entitled to their views. Holdouts are not inherently wrong, the right to disagree is fundamental to the jury system. But the foreperson's account complicates that framing considerably. If the holdout genuinely acknowledged reasonable doubt and then refused to vote accordingly, the issue is not a disagreement about evidence. It is a refusal to apply the legal standard the court instructed him to follow.
The mistrial left the case in limbo. Reddington's emergency appeal to block the mistrial declaration was struck down, making the mistrial official. Clancy remains at Tewksbury Hospital, a state psychiatric facility, and will stay there until her case is resolved. A hearing has been scheduled for September 29.
DA Cruz said his office would not make an immediate decision on a retrial. "No decisions will be made today," he told reporters, while reaffirming that "this was and has always been about getting justice for those three little babies." A potential retrial could come as early as fall 2025.
The insanity defense in this case turned on whether Clancy was in a postpartum psychotic state when she killed her children. The defense did not deny the killings. The question before the jury was narrow: did Clancy understand what she was doing, and could she conform her conduct to the law? Eleven jurors concluded she could not be held criminally responsible. One concluded she could, or, more precisely, one concluded he had doubt but would not act on it.
NBC10 Boston attempted to contact the holdout juror. He did not respond.
The jury system depends on citizens doing a hard thing honestly: setting aside emotion and applying the legal standard as instructed. By the account of three of his fellow jurors, the holdout in the Clancy case could not or would not do that. He accepted the doubt. He rejected the verdict it required. And three children's case, already unbearable in its facts, now has no resolution at all.
Whether prosecutors retry Lindsay Clancy, and whether a second jury can do what this one nearly did, remain open questions. What is not open to question is that eleven people spent nearly 40 hours trying to follow the law, and one person's refusal to do the same sent them all home with nothing.
The system asks a lot of jurors. It asks even more when one of them won't hold up his end.
