Jury Weighs Postpartum Psychosis Defense in Clancy Child Killings

A Massachusetts jury must decide whether Lindsay Clancy, 36, can be held criminally responsible for strangling her three children in their Duxbury home on January 24, 2023. The stakes center on whether severe postpartum psychosis prevented her from understanding that the acts were wrong.

Clancy does not contest that she killed Cora, 5, Dawson, 3, and eight-month-old Callan. She has pleaded not guilty by reason of lack of criminal responsibility. Jurors began deliberations Thursday afternoon after closing arguments that pitted prosecution evidence of her functioning earlier that day against defense claims of psychosis.

Prosecutors highlighted Clancy’s morning doctor’s appointment with one child, outdoor play with the others, and text messages arranging for her then-husband Patrick Clancy to run errands. They argued these steps showed she remained capable of distinguishing right from wrong. Defense attorney Kevin Reddington countered that Clancy suffered from postpartum psychosis, a condition estimated to affect one or two women per 1,000 births, and that fragmented mental-health treatment after Callan’s birth left her untreated.

A defense forensic psychiatrist testified Clancy was “clearly psychotic” with delusional thinking at the time. Prosecution experts acknowledged serious psychological problems but maintained she could control her behavior and appreciate its wrongfulness. Diary entries read in court described anxiety, “brain fog,” and feeling overwhelmed; clinicians who treated her earlier reported no observed mania or psychosis.

Clancy was discharged from a psychiatric hospital roughly three weeks before the killings. She sustained serious injuries later that day and remains paralyzed from the waist down. Separate civil claims filed by Clancy and her former husband against treatment providers remain unresolved. If convicted of murder, Clancy faces life without parole; a finding of lack of criminal responsibility would shift the question to whether she requires continued confinement in a mental-health facility.