Because the Night (Lloyd Hopkins Series #2) in Bloomington, MN

A botched liquor store heist leaves three grisly dead. A hero cop is missing. Nobody could see a pattern in these two stray bits of information–no one except Detective Sergeant Lloyd Hopkins, a brilliant and disturbed L.A. cop with an obsessive desire to protect the innocent. To him they lead to one horrifying conclusion—a killer is on the loose and preying on his city. From the master of L.A. noir comes this beautiful and brutal tale of a cop and a criminal squared off in a life and death struggle.