Lindsay Clancy, a 36-year-old former labor and delivery nurse, killed her three young children — Cora (5), Dawson (3), and Callan (8 months) — on January 24, 2023, in Duxbury, Massachusetts. She admitted to the killing but pleaded not guilty in her criminal trial, which ended in a mistrial. Is post-partum psychosis and bi-polar disorder enough to take away her criminal responsibility? We examine the case and offer a conclusion.