Sunset Express by Robert Crais

Prominent restaurateur Teddy Martin is facing charges in his wife’s brutal murder. But he’s not going down without spending a bundle of cash on his defense. So his hotshot attorney hires P.I. Elvis Cole to find proof that Detective Angela Rossi tampered with the evidence. Rossi needs a way back to the fast track after falling hard during an internal investigation five years ago. But Cole needs to know if she’s desperate enough to
falsify the case against Martin in order to secure her own position. As Cole and his partner Joe Pike work their way through a tangle of  witnesses and an even greater tangle of media, they begin to suspect that it’s not the police who are behind the setup.