Lt. Columbo is invited as a guest speaker in a criminology course and squares off with two cunning students.
Shortly after Sheriff Tupper's sister (Anne Meara) leaves her husband and seeks refuge in Cabot Cove, a murder occurs. With Tom Bosley.
Jessica (Angela Lansbury) comes to the aid of a shy poet (Thom Bray) who is the prime suspect when his tormentor (Barry Williams) is found dead. Guest star: Fritz Weaver.
Jessica reopens a 16-year-old murder case at the urging of a dying author (Van Johnson) who felt injustice was done.
A wealthy widow's marriage to a Franchman many years her junior ends in murder.
