Episode: 1990-01-20 | Airdate: Jan 20, 1990
When Dian Hunter, the publisher of the men's magazine "Bachelor's World", wants to sell her stock to a media tycoon, her adulterous partner Sean Brantley objects. Soon afterwards, Miss Hunter apparently disappears on a London-bound flight.
Episode: 1990-02-10 | Airdate: Feb 10, 1990
This time Columbo is put on a murder that was made to look like a suicide. However, he notices some loose ends, and asks a lawyer and a governor to clear these problems up.
Episode: 1990-03-31 | Airdate: Mar 31, 1990
A woman who blames Columbo for the loss of her husband sets out to get back at him.
Episode: 1990-04-28 | Airdate: Apr 28, 1990
The unsuccessful junior partner in a dental group, a bad husband and degenerate gambler, faces divorce and ostracism from his father-in-law's firm.
Episode: 1990-05-14 | Airdate: May 14, 1990
A successful writer of romance novels who is involved with a young, ambitious womanizer, is found shot to death in her Malibu home.
Episode: 1990-12-09 | Airdate: Dec 9, 1990
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.
