George Hirsch, a veteran cop who just served six months for a hit-and-run accident, swears he didn't commit the crime and is worried that his wife has been seeing another man while he was in prison. Meanwhile Roy Brenner investigates a lead - an anonymous letter from a man who claims that another man was driving the hit-and-run car. The evidence seems to point to a window dresser as not only the driver of the vehicle in question, but the man who was cuckolding Hirsch.