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Massachusetts Mother's Murder Trial Forces a Reckoning With Postpartum Psychosis

By Jamie Sullivan · Tuesday, July 21, 2026
Finn's Take· TL;DR
  • Lindsay Clancy's insanity defense argues postpartum psychosis and over-medication rendered her unable to control her actions when strangling her three children.
  • Prosecution contends she deliberately planned the murders by sending her husband away and checking travel time, suggesting calculated behavior rather than psychosis.
  • Case highlights rare postpartum psychosis condition and raises questions about inadequate mental health treatment and medical system accountability for new mothers.
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A Tragedy That Shook a Community — and a Courtroom

Jury selection began Monday in the trial of Lindsay Clancy, a Massachusetts mother accused of strangling her three children in 2023 before attempting to take her own life. The case has drawn national attention not only because of its unimaginable horror, but because of the rare and deeply contested defense at its center: postpartum psychosis.

Defense attorney Kevin Reddington plans to seek what is known as the insanity defense, arguing Clancy should not be held criminally responsible for her actions on the January evening in 2023 that she strangled her children — 5-year-old Cora, 3-year-old Dawson, and 8-month-old Callan — at the family's home. The facts of what happened that night are not in serious dispute. What is in dispute is whether Clancy had any meaningful control over her actions at all.

What the Defense and Prosecution Each Argue

Clancy's attorney has said she was in a state of psychosis after being prescribed more than a dozen different medications that were supposed to improve her mental state. The defense points to a pattern of Clancy actively seeking psychiatric help — including admitting herself to a postpartum depression program — as evidence that she was a patient overwhelmed by a broken treatment plan, not a calculating killer.

Where the defense sees a woman lost inside her own mind, prosecutors see calculation. They allege that on the night of January 24, 2023, Clancy deliberately sent her husband out for takeout food and a pharmacy errand, and that she consulted a mapping app to determine how long he would be away. In pre-trial hearings, the judge ruled that prosecutors will be allowed to play a recording of the 911 call Patrick Clancy made when he returned home and found his wife on the ground outside the house — and then discovered his three children in the basement while on the phone.

A Rare Condition, a Rare Defense

The trial is expected to explore the complicated and rare phenomenon of postpartum psychosis, which afflicts a very small percentage of women who develop delusions and sometimes hallucinations after childbirth. Globally, the condition affects roughly one to two out of every 1,000 mothers — making it uncommon enough that many jurors, and even many doctors, may have limited familiarity with it. Legal experts say it may be difficult for a jury to embrace this strategy, noting that jurors are often reluctant to accept an insanity defense — especially in the case of a horrific crime involving young children.

There is some precedent, though it is thin. In 2006, Andrea Yates was found not guilty by reason of insanity after killing her five children, with her defense citing psychotic delusions tied to postpartum depression. The Clancy case echoes that landmark trial but adds a new and troubling dimension: the role of the medical system itself. Reddington has said that Clancy had been prescribed up to 12 different medications for her mental issues following the birth of her third child, and believes the over-medication — which he described as "horrific" — contributed to her actions on the day of the murders.

A Husband's Pain, and a Public Reckoning

Clancy's lawyers — and her husband — say she was not responsible for her actions. Patrick Clancy has been a striking and unusual presence in this case, publicly defending his wife even as he grieves the loss of his three children. He told *The New Yorker*, "I wasn't married to a monster — I was married to someone who got sick." He has also filed a lawsuit against her medical team, accusing them of failing to properly monitor her responses to the medications she was prescribed.

Many women say they hope the trial will help educate people about how common it is for new mothers to struggle with their mental health. Whatever verdict the jury ultimately reaches, the trial is already forcing a broader and overdue conversation — about how postpartum mental illness is identified, treated, and taken seriously by the medical community. The trial, which could take several weeks, is expected to explore the complicated and rare phenomenon of postpartum psychosis in depth. The outcome may not only determine Lindsay Clancy's fate, but shape how courts and clinicians think about maternal mental health for years to come.

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