While on a work trip to London, to learn the techniques of the British police, Columbo gets involved with the murder of Roger Haversham, a rich old businessman who is financing the careers of two rundown theater stars. When Sir Roger threatens to end their careers, because he felt betrayed, he's killed. A short while after, his butler figures out the motives for his master's murder, and blackmails the actors, who have no other choice than to kill him and make it look like he commited suicide due to remorse, because he murdered his employer. Columbo stills manages to catch both the murderers, with the help of a pearl and a new umbrella.

The episode was rated 7.40 from 144 votes.

Dr. Marshal Cahill, head of a think tank, is forced to protect his plagarizing son by killing the professor, Nichols, who discovered the plagarized information. Cahill programs a robot to take his place during a war game exercise that he runs from an isolated room, then fakes a hit-and-run accident on Nichols and plants evidence to make it look like a drug theft gone awry. The first thing Columbo notices upon arrival is a match burned down to the base - something Columbo knows well because it's how you light a cigar. And Dr. Cahill is the only other cigar smoker around. There are a lot of other little things that Columbo notices as well, and with the help of a child prodigy he discovers how Cahill used the robot to provide himself with an alibi. But without one major clue, Columbo arrests the son to force Cahill, who was willing to kill for his son, to confess his crime to protect the boy.

The episode was rated 7.38 from 136 votes.

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.

The episode was rated 7.34 from 126 votes.

The family and friends of brilliant naval architect Commodore Otis Swanson have gathered for the company’s annual party. The commodore, however, has become increasingly discontented with the way his son-in-law, Charles Clay, has developed the shipbuilding firm into a vast, impersonal corporation. He is tired of being surrounded by freeloaders like his alcoholic daughter, Joanna, his irresponsible nephew, Swanny, and of course, Charles. The only man he respects is Wayne Taylor, the head of the boatyard. In fact, the Commodore intends to sell the company. That night, Charles is wiping clean the belaying pin used to bash the Commodore’s skull.

The episode was rated 7.29 from 104 votes.

An ambitious womanizer, rejected by the romance novelist he planned to marry, ends the story she was writing with a gun and makes the murder look like robbery gone awry.

The episode was rated 7.27 from 96 votes.

The owner of a bull ranch in Mexico gives his workers the day off, and then talks his number one man into fighting the bull who nearly killed his son. But instead he shoots him with a tranquilizer gun, and lets the bull kill him. Colombo, who is on vacation in Mexico, gets dragged into this case by an admiring colleague, but he has trouble convincing the Mexicans that the accident is really homicide. And how do you prove that the bull is a murder weapon?

The episode was rated 7.24 from 113 votes.

Hollywood film composer and conductor Findlay Crawford (Billy Connolly) has been mentor to a talented young composer who has been ghostwriting most of Crawford's work for the last few years, and penned Crawford's entire last movie score, which won an Oscar. When the protege wants to venture out on his own, Crawford, whose own talent seems to have run dry, concocts the perfect murder, made to look like a suicide.

The episode was rated 7.20 from 10 votes.

Graham McVeigh (George Wendt), a thoroughbred ranch owner, kills his brother, and frames a local mob bookie. Then, under the guise of making good on his brother's debt, he kills the bookie as well, claiming self-defense. Mob boss Vincenzo Fortelli (Rod Steiger) starts to exert pressure on McVeigh. To solve the crime Columbo must work with the gangster.

The episode was rated 7.20 from 10 votes.

Mortician to the stars Eric Prince (Patrick McGoohan), kills gossip reporter Verity Chandler (Rue McClanahan), who had knowledge of skeletons in Prince's closet. Columbo must figure out what happened to her and why.

The episode was rated 7.00 from 12 votes.

Nick Franco is a violent, two-timing gigolo and his current paramour, Laura Stanton, has had enough. With the help of a young woman named Lisa, she murders her lover and sets herself up with an airtight alibi. When Columbo starts sniffing on her trail, Laura quickly works to seduce the married detective, hoping that her sex appeal will throw the usually stubborn Lieutenant off the scent.

The episode was rated 6.92 from 12 votes.