Joe Deacon, a deputy sheriff, was requested to return to the old Los Angeles station to collect evidence. Joe was a top detective until the workload and stress caught up with him. While trying to collect the required evidence, he received news that the evidence was not ready for him to take, and instead, Joe had to stay in town a little longer and wait for the signatures and paperwork to be completed. While visiting and waiting for his collection, he begins to talk to his old co-workers; he soon hears the word about a series of murders that sound familiar to one of Joe’s old unsolved cases. Soon is invited to team up with the leading detective on the case named Baxter (Rami Malek). Together, the two will try to catch the serial killer who has taken many young women's lives.