Lindsay Clancy returned to court in a bid to dismiss the charges that she murdered her three children. The hearing Monday is the second time the Massachusetts mother has been in court since her trial ended with a deadlocked jury. Clancy has never disputed killing her three young children in 2023, but her lawyer has argued she had postpartum psychosis and was unable to control her behavior. Prosecutors have acknowledged that the 36-year-old Clancy had mental health problems but said she acted deliberately and understood her actions were wrong. A judge declared a mistrial Sept. 4 after jurors were unable to agree on a verdict.