Detectives Charlie Crews and Dani Reese are on the hunt for a serial killer when three numbered trunks containing suffocated bodies are found scattered across Los Angeles. With their new boss New York transfer Captain Kevin Tidwell pressuring them to get answers, Crews and Reese race to find a connection between the murders before the killer strikes again. Meanwhile, Ted and Crews attempt to track down the daughter, the lone survivor, of the family Crews was wrongly convicted of killing.