Inside the Last‑Minute Appeal That Failed to Stop a Mistrial in the Lindsay Clancy Case

Just as the jury in Plymouth County Superior Court seemed stuck at an 11‑1 deadlock, the defense for Lindsay Clancy made a desperate move. On September 4, 2026, they filed an emergency appeal asking the court to either strip a juror of voting power or, at the very least, subject that juror to another round of voir dire.

The appeal’s language was stark: the foreperson had warned the judge that one juror, though acknowledging reasonable doubt, was refusing to apply it. In plain terms, the defense argued the juror’s stance was more personal prejudice than a protected deliberative privilege.

According to the filing, the juror’s alleged bias stemmed from a broader stigma against people with severe mental illness. The defense cited the Fifth and Fourteenth Amendments, as well as Massachusetts’ own protections for individuals with mental health conditions, insisting that the juror’s conduct threatened Clancy’s right to a fair trial.

Judge William Sullivan, who was already leaning toward a mistrial, gave Clancy’s attorney, Kevin Reddington, a narrow one‑hour window to seek an emergency stay. When the Massachusetts Supreme Judicial Court denied the request, the judge moved forward with the mistrial declaration.

Lindsay Clancy, 36, has never denied that she killed her three children—Cora, 5; Dawson, 3; and infant Callan—in January 2023. She pleaded not guilty by reason of insanity, saying she was suffering from postpartum psychosis and bipolar disorder at the time. The prosecution, however, maintains the murders were pre‑meditated.

The courtroom drama has been anything but quiet. At one point, Judge Sullivan referenced Winston Churchill’s wartime speeches, urging jurors to “brace for duty” and thanking them for their endurance in what he called a “long and difficult” case.

With the mistrial now official, the prosecution, led by District Attorney Timothy Cruz, announced it will decide later whether to retry Clancy. A follow‑up hearing is scheduled for September 29, leaving the public and the families of the victims waiting for another chapter.

In the end, the emergency appeal highlights a growing legal conversation: how juror bias, especially concerning mental‑illness stigma, intersects with a defendant’s constitutional rights. Whether the courts will revisit that question in a future trial remains to be seen.