Lindsay Clancy trial opens with dueling accounts of why she killed her three children

Opening arguments

On Monday, a Plymouth County jury heard sharply conflicting narratives about why Lindsay Clancy strangled her three children in the basement of her Duxbury home in January 2023. Defense attorney Kevin Reddington told the court that Clancy, now 35, was "suffering from psychosis at the time," describing her as a loving mother overwhelmed by postpartum mental illness. Assistant District Attorney Shanan Buckingham countered that Clancy acted deliberately, pointing to evidence she mapped her husband's errand time to ensure she could kill before his return. Clancy, a former labor and delivery nurse at Massachusetts General Hospital, has pleaded not guilty to three counts of first-degree murder but does not dispute that she carried out the killings.

This is a woman that was suffering from psychosis at the time that she went down to that basement.

Reddington argued that Clancy had struggled with suicidal thoughts and received a "myriad of drugs" from multiple healthcare providers in the months after her third child's birth, none of which helped. He told jurors she loved her children "right up to the time of their death."

The day of the killings

The events of January 24, 2023, remain the heart of the case. Prosecutors say Clancy sent her then-husband, Patrick, to pick up a food order after calculating on her phone how long the round trip would take. In his absence, she strangled Cora, 5, Dawson, 3, and 8-month-old Callan with exercise bands. She then cut herself with a knife and leaped from a second-story window, an act that left her paralyzed from the waist down and in a wheelchair for the trial. Patrick Clancy found the children in the basement after returning home and screamed they had been killed, according to first responder accounts. Cora and Dawson died at a local hospital that evening; Callan succumbed to his injuries several days later.

This was a woman who acted intentionally, rationally, and swiftly to accomplish a very specific goal - to kill.

A mother's mental health

The defense is raising an insanity defense, centering on Clancy's mental state in the months before the killings. Patrick Clancy testified Monday that his ex-wife's condition deteriorated after the birth of their third child. "She kept getting worse and worse," he said, recounting her weight loss, deepening depression, and a switch in psychiatrists because the previous treatment "wasn't working." He identified December 2022, a month before the children's deaths, as the start of "her big spiral." Reddington said Clancy heard a voice on the day of the killings telling her, "This is your last chance. Kill the children so you can kill yourself." The defense contends she had been hospitalized in a psychiatric facility and was discharged only 19 days before the homicides. Postpartum psychosis is rare, affecting an estimated one to two women per 1,000 births, and can cause hallucinations, delusions, and paranoia.

The legal stakes

Buckingham urged jurors to focus on the legal question of whether Clancy appreciated the wrongfulness of her actions. She acknowledged Clancy's mental health struggles but argued the evidence shows a woman who made a "selfish choice" when she saw an opportunity to escape. Legal analyst Elyse Hershon said, "Whenever there are deaths of children, it rattles emotions. Because these actions are incomprehensible and the outcome so horrific, people tend to want to hold someone responsible." The verdict will likely hinge on whether jurors believe Clancy possessed the intent and mental capacity required for a murder conviction. The trial is expected to last several weeks, with the 12-member jury weighing testimony from medical experts and family members. If convicted of first-degree murder, Clancy faces life in prison without parole.