Shield for Murder / William P. McGivern

Lieutenant Barney Nolan, a 16-year veteran of the police force, has had it with the world. He may have been a good detective once, but has become corrupt and vicious. In a secluded alley late one night he fatally shoots a bookmaker in the back and steals his $25,000. Barney then claims he had been forced to kill the man because he tried to escape custody. Sergeant Mark Brewster, his friend and protégé, believes him, as does the Captain of Detectives, Captain Gunnarson. However, newspaper reporter Cabot suspects otherwise, as there have been rumors about Barney’s illicit activities for a while.