Lindsay Clancy, 35, has admitted she killed her three children at the family's home in Duxbury, Massachusetts, in January 2023. Her murder trial, now in its sixth day at Plymouth Superior Court, comes down to one question: did she do it on purpose, or was she so overcome by a severe mental illness that came after childbirth that the law should not hold her responsible?

The children were five-year-old Cora, three-year-old Dawson, and eight-month-old Callan. They were strangled with exercise bands, which were shown to the jury during testimony from Patrick Clancy, Lindsay's now-divorced husband, on July 27 and 29, 2026 (The Guardian; The Patriot Ledger).

Patrick Clancy spoke in court for two days, ending with the prosecution's questions on July 29. He described the hours before and after the killings. He said that in the months before, Lindsay had told him she was having thoughts of suicide and of harming their children. She had seen doctors who specialize in mood disorders after pregnancy, was given several psychiatric medications, and had checked into a psychiatric hospital earlier in January 2023. She killed the children 19 days after being released.

Patrick said that after she came home from the hospital, Lindsay gave no signs she planned to hurt herself or the children. On the day of the killings, the family started with art projects, according to the Associated Press. Patrick said Lindsay asked him to pick up takeout food and stop at a pharmacy for stool softener. He said she seemed "normal" when he left. His last memory of Dawson was his three-year-old son on the couch eating chicken nuggets and green beans.

Prosecutors say the errand was planned on purpose. They argue Lindsay sent Patrick out of the house on purpose so she could act. Jurors watched pharmacy video showing Patrick calling his wife to ask which medicine to buy. He said she was quiet on the call and that he assumed she was busy giving baths.

When Patrick got home, the house was silent. He found a lot of blood in the main bedroom. Lindsay had tried multiple ways to end her own life and is now paralyzed from the waist down after jumping from the home's second-story window. She was badly hurt but conscious, and she told Patrick the kids were in the basement. She did not say they were dead.

On July 29, the court played the 911 call Patrick made after returning home. The recording included nearly two minutes of him screaming before he could speak to the dispatcher, according to Boston 25 News. Jurors heard him sobbing, screaming "oh my God!", and saying, "She killed the kids." Lindsay Clancy sat at the defense table with her head in her hands, sobbing. Her parents also appeared to be crying. The judge had previously barred media from posting audio of the 911 call, photographs from the trial, and autopsy photos of the children (The Boston Globe; Yahoo News).

The defense's main argument is that Lindsay was suffering from postpartum psychosis. This is a rare but serious mental illness that can happen after childbirth, linked to stress, lack of sleep, and hormone changes. Her lawyer told the court she had bipolar disorder, a condition involving extreme mood swings, and that antidepressants prescribed after Callan's birth made her condition worse. On the day of the killings, Lindsay said she heard voices telling her, "This is your last chance. Kill the children so you can kill yourself," according to her lawyer (The Guardian).

The outcome of the trial carries enormous consequences. If convicted of murder, Lindsay Clancy faces life in prison without parole. If found not guilty due to lack of criminal responsibility — meaning the court decides she could not understand or control what she was doing — she would be sent to a state mental health facility.

Jury selection began July 22, 2026, at Plymouth Superior Court (The Boston Globe). Patrick Clancy left the court after finishing his testimony.

The broader context here is that this trial asks a jury to decide something deeply difficult: whether a person who admits to a terrible act was truly unable to control it. Postpartum psychosis is rare, but when it strikes, it can cause hallucinations and break a person's grip on reality. The jury has to weigh that medical reality against the prosecution's argument that Lindsay planned ahead, sending her husband away before acting. How the jury balances those two pictures will determine whether the law treats her as a criminal or as someone who was gravely ill.