True Detectives by Jonathan Kellerman

Moses Reed and Aaron Fox have the same mother; their respective fathers were cops, friends, and partners. And despite their shared calling, their turbulent family history has set them at odds. Moses is a no-frills LAPD detective; Aaron is a smooth-talking private eye. Usually they go their separate ways, but the disappearance of straight-A student Caitlin Frostig isn’t usual. Reluctantly tag-teaming to crack a cold case that won’t die, Moses and Aaron descend into the sinister underside of the City of Angels. Surrounded by twisted millionaire moguls, tarnished trophy wives, and famous faces with hellish secrets, they pull no punches as they penetrate the strange, seductive world of glamour, wealth, and power to keep L.A.’s dark dreamland from claiming another lost soul.