Lindsay Clancy murder trial: Day 1 of testimony | CNN

Her attorney argues she was suffering from postpartum psychosis and extreme mental illness when she killed them. • Prosecutors called Patrick Clancy as their first witness in the triple-murder trial of Lindsay Clancy. The Massachusetts mother argues she is not criminally responsible for fatally strangling her three children: Cora, 5, Dawson, 3, and 8-month-old Callan. • Patrick Clancy, the defendant’s ex-husband and the children’s father, is a key witness in the case. He is expected to return to the stand Wednesday, when he will likely continue describing the day of his children’s deaths. • Clancy has pleaded not guilty to three counts of murder and faces life in prison if convicted. Her attorney has argued she was suffering from postpartum psychosis and extreme mental illness when she killed them. The testimony during the trial is expected to focus heavily on testimony from dueling psychiatric and medical experts. • Editor’s note: Coverage of this story contains graphic descriptions of child killings, suicidal ideation, and an attempt to die by suicide. Our live coverage of the first day of Lindsay Clancy’s triple-murder trial has ended. Follow our live coverage