When Ellie Barker was three years old, her mother was found in a torched Cadillac, overturned on Mulholland Drive, with a bullet in her head. Many detectives had tried and failed to solve the case. Decades later, still desperate for answers, Ellie hires LAPD homicide lieutenant Milo Sturgis, who calls in the expertise of brilliant psychologist Alex Delaware, to investigate. A terrible accident or a horrifying crime?