Lt. Trench is under investigation by Internal Affairs, suspected of killing an informant.
Lt. Trench is the victim of a frame up. An informant of his is murdered and the circumstances make him appear guilty. It doesn't help his case any when the Captain in charge doesn't like Trench because of his swift promotion over more seasoned officers. Trench reluctantly hires Harry to find the truth and clear his name. Harry's investigation leads him to a ring of heroin dealers.—tomtrekp