Joe “Deke” Deacon (Washington), the deputy sheriff of Kern County, is sent to Los Angeles for what should have been a quick evidence-gathering assignment. But Deke gets caught up in the hunt for a serial killer terrorizing the city. Los Angeles Sheriff’s Department sergeant Jim Baxter (Malek) is tasked with leading the search for the killer. Impressed with Deke’s police instincts, he gets him to cooperate with him even if not through the official channel. While tracking the killer, Baxter is unaware that the investigation is bringing to light echoes of Deke’s past, uncovering disturbing secrets that could jeopardize more than just his case.