Michael Connelly
Try the Harry Bosch series - Connelly's lead character is an L.A. detective who sticks with his cases and has some major attitude toward anyone who tries to distract him from getting to the bottom of them. Crimes are multi-layered and impossible to figure out ahead of Harry. Connelly is a Pulitzer Prize winning journalist and one of the top crime writers available today.
Try
The Concrete Blonde
The Last Coyote
