When the ax fell in the 87th Precinct. it buried itself in the head of an aged janitor. Steve Carella, who never got an easy case or a dull one, is in charge. His investigation takes him to the secret life behind the janitorial front--a life hedged around by madness at home and at work. All the false clues as well as the real ones are checked out in the steady, police method technique of telling that has made the 87th Precinct the station fans watch for.