Mistrial declared in Massachusetts case over mother accused of killing three children

A judge in Plymouth, Massachusetts, declared a mistrial in the case of Lindsay Clancy, a 36-year-old mother charged with the 2023 killings of her three children. After nearly a week of deliberations, the jury of nine women and three men reported that they remained deadlocked, prompting Judge William Sullivan to end the trial.

The jurors submitted notes indicating that a single juror prevented a unanimous decision, and the foreperson wrote, "It is with a heavy heart that we report we are unable to come to a unanimous decision, and we will not be able to." The defense’s last-minute request for an emergency stay from the state Supreme Judicial Court was denied.

Clancy, who has been confined to a state psychiatric hospital for more than three years, will remain there while the Plymouth County district attorney’s office decides whether to pursue a retrial or lesser charges. District Attorney Timothy Cruz said a decision on a possible new trial would be made soon.

The five-week trial focused on whether Clancy’s mental state, alleged to involve postpartum psychosis, exempted her from criminal responsibility under Massachusetts’s insanity defense. Prosecutors argued she planned the killings to end her own life, while her lawyer, Kevin Reddington, maintained that the state failed to prove she acted with a sound mind.

Throughout the proceedings, more than 70 witnesses, including medical experts, family members, and law enforcement, testified about the events and Clancy’s psychiatric history. The defense highlighted expert testimony that she experienced postpartum psychosis and heard auditory commands to kill, whereas prosecution experts disputed the diagnosis, citing a narrow definition of the postpartum period.

Clancy attended the trial in a wheelchair, accompanied by nurses, and did not testify. She became emotional when the medical examiner described the children’s injuries, prompting a temporary pause in the trial.

The case has drawn public attention to postpartum mental-health care, with advocacy groups reporting increased calls to helplines since the trial began.