Lilly investigates the 1954 murder of a woman who was allegedly bludgeoned to death shortly after being released from an asylum. The case is reopened after an elderly woman dies and her estranged son claims the deceased is not his mother. The probe reveals that his mom was the 1954 victim. She was committed to the asylum after nearly killing herself and her son in a house fire that she set. Also, Valens learns the truth about Josie's past.