Lindsay Clancy heard ‘command hallucinations’ when she killed her children, court told
Lindsay Clancy was experiencing a severe episode of postpartum psychosis and suffering from so-called “command hallucinations” at the moment she strangled her three young children in January 2023, a forensic psychiatrist testified in a Massachusetts courtroom on Wednesday.
Dr. Catherine Chandler, the final witness called by the defence, spent nearly four hours on the stand explaining to the jury how postpartum psychosis can strip a person of all contact with reality — and, in some cases, compel them to act on voices they believe are giving them direct orders.
What are command hallucinations?
Command hallucinations are auditory experiences in which a person hears a voice — often perceived as authoritative or even divine — issuing specific instructions. Dr. Chandler described them as among the most dangerous symptoms in all of psychiatry. “The patient doesn’t experience this as a thought,” she told the court. “They experience it as an external reality, as real as any voice in this room.”
Clancy, a 34-year-old registered nurse from Duxbury, Massachusetts, is charged with first-degree murder in the deaths of her five-year-old daughter Cora, her three-year-old son Dawson, and eight-month-old baby Callan. She has pleaded not guilty by reason of insanity. Prosecutors argue she knew what she was doing.
Defence builds its case on psychiatric evidence
Dr. Chandler reviewed hundreds of pages of medical records, text messages, and video footage before concluding that Clancy met every diagnostic criterion for postpartum psychosis at the time of the killings. She noted Clancy had been prescribed at least 13 different psychiatric medications in the weeks before the incident — a fact the defence has repeatedly highlighted as evidence of a catastrophic failure in her care.
Postpartum psychosis affects roughly 1 to 2 in every 1,000 new mothers. It’s rare, but it’s fast-moving and can escalate to dangerous levels within hours. Dr. Chandler was careful to distinguish it from the far more common postpartum depression, calling the two conditions “entirely different illnesses.”
Still, prosecutors are expected to push back hard in cross-examination, arguing that Clancy’s actions — including jumping from a second-story window after the attack — demonstrated an awareness of guilt rather than a complete break from reality.
A case that has gripped the country
The trial has drawn national attention, partly because Clancy was by all accounts a devoted mother and a healthcare professional who had sought help repeatedly in the weeks before the deaths. Her family has sat behind the defence table throughout the proceedings.
The jury of seven women and five men is expected to begin deliberations later this week.
Whatever verdict they reach, the case has already forced an uncomfortable reckoning with how the American medical system identifies and treats severe postpartum mental illness. And for many advocates, that conversation won’t end when the courtroom empties.
