Dark Sacred Night by Michael Connelly (Renee Ballard #2)

A MURDER HE CAN'T FORGET.
A CASE ONLY SHE CAN SOLVE.

Daisy Clayton's killer was never caught. In over ten years, there has been no breakthrough in her murder case.

Detective Renée Ballard has faced everything the LAPD's notorious dusk-till-dawn graveyard shift has thrown at her. But, until tonight, she'd never met Harry Bosch - an ex-homicide detective consumed by this case.
Soon, she too will become obsessed by the murder of Daisy Clayton.
Because Ballard and Bosch both know: every murder tells a story. And Daisy's case file reads like the first chapter in an untold tragedy that is still being written - one that could end with Ballard herself, if she cannot bring the truth to light...