Two women kill their two-timing lover, and while Lt. Columbo examines one of them, who pretended to discover the victim's body, they develop an awkward rapport.

Lauren Staton and Lisa Martin kill their two-timing lover Nick Franco. Lauren's the one who pulled the trigger, and they've made it look like Franco was killed by a burglar in his apartment. They've prepared well, with both having solid alibis. Lt. Columbo is in charge of the case and is very much attracted to the beautiful Lauren. She uses that to her advantage and is soon buying him gifts and giving him the odd kiss. Columbo is flattered but begins to see anomalies in some of the physical evidence. He becomes certain that Lauren is involved in Franco's death but realizes he will only be able to make an arrest if he gets a confession. He manages to get that, but even he is surprised when learns of her true relationship to Lisa.—garykmcd

Gigolo Nick Franco is a violent, two-timing cad. His current paramour, Lauren Staton, has had enough. With the help of a young woman named Lisa, she murders her lover and sets herself up with an airtight alibi. When Columbo starts sniffing on her trail, Lauren quickly works to seduce the married detective, hoping that her sex appeal will throw the usually stubborn Lieutenant off the scent.—Leaper