Lt. Columbo is invited as guest speaker in a Criminology course and squares off against two cunning students, who are confident they have duped the lieutenant with various leads, when their professor is found murdered.

Wade Anders, a former security expert, hosts the show Crime Alert. A rival host, news reader Bud, discovers Wade was in a porno movie and plans to tell the world then take over his show.

Lt. Columbo is pitted against an equally brilliant, nationally recognized criminal defence lawyer who murders his rock star girlfriend when he discovers she is seeing another man.