With this new thriller, The New York Times bestselling author Tami Hoag delivers her own message to suspense fans everywhere: Don't turn off the lights, and keep reading if you dare. From the gritty streets of Los Angeles to its most protected enclaves of prestige and power to the ruthless glamour of Hollywood, a killer stalks his prey. A killer so merciless no one in his way is safe—not even the innocent.
At the end of a long day...

Detective Harry Bosch investigates a cold case and the murder of a city councilman's son. The cases are unrelated but they twist around each other like the double helix of a DNA strand. One leads to the discovery of a killer operating in the city for as many as three decades; the other to a deep political conspiracy that reached back into the dark history of the police department.