The high-profile trial of Lindsay Clancy ended in a mistrial Friday after a Massachusetts jury could not reach a unanimous decision in the triple-murder case. Judge William Sullivan dismissed the jury shortly after 2 p.m., thanking them for their service after deliberations hit nearly 40 hours in a trial that stretched more than six weeks. Clancy’s case captured the public’s attention for the nature of the crimes and became a cultural touchpoint, putting postpartum mental health issues in the spotlight. She has admitted to killing her three children — Cora, 5; Dawson, 3; and Callan, 8 months — and the jury was tasked with deciding whether to accept her insanity plea. Prosecutors must now decide whether they want to try the case again.