A trailer park massacre leaves a young boy without his family; and Will, strongly opposed to leaving him, becomes his temporary guardian. Meanwhile, Faith receives a visit from her mother, and Angie spirals from incidents of her past.

With Angie on leave, Will and Faith partner up with Ormewood to investigate a string of serial killer cases tied to Will and Angie's childhood and a chain of incidents, formerly investigated by Amanda and Evelyn, from the '80s.

When an APD agent goes missing, Will examines the crime scene and locates a secret message putting him back on the path to justice. Meanwhile, with his lineage in question, Will realizes the answers he seeks have been in front of him all along.