Lost Light - Michael Connelly

At the end of CITY OF BONES Harry Bosch quit the LAPD, but he's back in a new role, one that will give him more freedom to pursue the cases that compel him. When he left the LAPD Bosch took a file with him: the case of a film production assistant murdered four years earlier during a $2 million robbery on a movie set. The LAPD, now operating under post-9/11 rules, think the stolen money was used to finance a terrorist training camp. Thoughts of the original murder victim were lost in the federal zeal, and when Bosch decides to reinvestigate, he quickly falls foul of both his old colleagues and the FBI. But it's not just the case which is keeping Bosch awake at night. When the investigation enables him to meet up with an old friend, shadows from his past come back to haunt him...