Criminology professor D.E. Rusk threatens to expel spoiled fraternity brothers Justin Rowe and Cooper Redman for cheating by stealing the final exam. In a variation of Leopold and Loeb, the two students decide to kill Rusk. They fake a message to lure him away from the university just when Columbo will be giving a guest lecture to his class. While sitting at the lecture, they monitor the parking garage using a miniature TV camera and shoot Rusk by his car with a remote-controlled gun, both devices being hidden in their pickup truck's engine compartment. With an airtight alibi, the boys then plant evidence to make it look like the professor was killed because of a Mafia exposé he was working on. Final clue/twist: Columbo tricks the murderous duo by letting them "overhear" details of a car owned by a suspect. After the murder weapon is found in the car, he reveals it is actually his wife's car. Because only they could know which car it was, they must have planted it and must be the murderers. Directed by: E.W. Swackhamer. Story by: Frederick King Keller, Jeffrey Bloom.