Jack Cassidy

Lt. Columbo cannot resist the challenge of a perfect murder, a reliable alibi and a dangerous game of cat-and-mouse with a murderous mystery writer.

Columbo matches wits with a nightclub illusionist suspected of murdering his business associate.

Allen Mallory, author of five best-selling detective novels, decides to leave Riley Greenleaf's publishing house. His agent, Eileen McRae, has convinced him that he can write serious fiction for rival publisher Jeffrey Neal. Enraged, Riley hires demolitions expert Eddie Kane to kill Allen. In addition to collecting on a life insurance policy, Riley will make sure that Allan never writes for another publisher.

After Marty tries to trick Ann into believing Donald had married a starlet, Ann and Donald turn the tables on him.

Ann gets a job in a show in Las Vegas with an egotistical actor who tries to ruin her relationship with Donald.

Ted Baxter's successful brother arrives in town and revives a sibling rivalry.