A sniper kills the head of a model agency during a fashionable lawn party. The suspects include the victim's business partner, his disc jockey brother, one of his top models and her estranged husband. During the course of the investigation, the model accuses Tim of being a dirty cop and having provided inside information as part of an extortion plot. Burke has no choice but to suspend Tim and, when there is another killing and Tim has no alibi, Burke has to work fast before Tim is arrested for murder.

With Burke out of town, Tim, Les and Sgt. Ames have to discover who is responsible for the murder of a blackmailer found propped among the mannequins in a department store window. Les is intrigued by the store owner's executive secretary, Tim follows the head of ladies' fashion, a race car enthusiast, and Sgt. Ames tracks down a nightclub comic who works days as a bus driver. The owner's son and a shifty sidewalk pitchman also come under suspicion. After the man who found the victim is himself killed, a winning racetrack ticket proves the final clue to the murder.