From the daily newsletter: Cases such as Lindsay Clancy’s, in which mentally ill mothers kill their children, often present a vexing, circular logic.

A key question in the Massachusetts murder trial of Lindsay Clancy is whether postpartum psychosis drove her to kill her three children.

Lindsay Clancy and her ex-husband, Patrick Clancy, filed lawsuits accusing her medical providers of failing to properly diagnose and treat her condition

The closely watched trial of Massachusetts mother Lindsay Clancy has begun, more than three years after the deaths of her three young children shocked the nation.