An impossible case. A killer on the loose.
When Ellie Barker was barely three years old, her mother was found with a bullet in her head inside an overturned torched Cadillac on Mullholland Drive. No physical evidence, no witness and no apparent motive.
Twenty-five years on, many detectives have tried and failed to get to the bottom of the case.
Desperate for answers, Ellie hires LAPD homicide lieutenant Milo Sturgis, who calls in the expertise of brilliant psychologist Alex Delaware, to investigate.
But as the duo start digging, the mystery becomes even more twisted. And they soon discover a string of dangerous threats still lurking in the present ...