Jan discovers her Aunt Jenny looked exactly like her when she was young. Curious about how she looks now and thinking perhaps that is how she'll turn out to look, Jan asks her for a picture of her now. This causes Jan to become distressed since Jenny, now, doesn't look to attractive.
Brett wakes up one morning and discovers that he got married the night before.
A military-issue fragmentation grenade is used in an attack on two Vietnam veterans, one of whom - a friend of Mark's - is killed. When it transpires that another of the pair's old unit has come under similar attack, the Chief sets out to trap the killer, using Ed in a cunning disguise as bait.
Hannibal Heyes and Kid Curry, two of the most wanted outlaws in the history of the West, are popular "with everyone except the railroads and the banks".
Lee Gibson is convinced that bad luck follows him about and that he can never win - but this time he is determined to do or die when he carries out an armed robbery.
A chemist rigs a bomb in his uncle's car to gain control of his uncle's company, then plants clues to make Columbo suspicious of the company's Vice-President.
An insurance swindler stages a miraculous recovery from his fake paralysis at a Mexican shrine. An American drifter protects a Scottish widow from the specter of her late husband.
The trio and Greer know that a paroled killer plans to get revenge on Pete, but Pete has no idea why the man is out to get him.
Several faces from the past reappear as McGarrett must stop Wo Fat from carrying out his plan, a ninety second attack on a missile tracking base.
Newly falls in love with a woman who could put him in danger, once her past is known.
Lucy Carter, a widow with two teen children, takes a job as a secretary for her stuffy brother-in-law.
Fired ranch hand, Cactus, suggests that Ben is too old to put in a real work's week and challenges Ben to take a job as a ranch hand under the name "Ben Brown". He takes the job to prove himself better than Cactus.
In this crazy episode, Samantha gets a condition which makes her entirely 500 pounds heavier. Dr. Bombay comes and gives her an antidote that makes her lighter...a little too light as she floats to the air! This will be hard to hide when the Prescotts, McMann and Tate's newest clients, has Samantha volunteer for a charity bazaar and fashion show. Sam tries everything to help weigh her down, but to no avail. In a memorable scene, Samantha holds a giant urn on her shoulder as she goes down the runway half floating, half walking in the fashion show. It is there that Darrin comes up with a spectacular slogan for Prescott shoes.
Emil Gadsen has controlled the Syndicate's vice operation in the Northeast U.S. - now he plans to flee the country to avoid an indictment, leading his underling Thor Coffin in charge. Gadsen has a list of officials he pays off that he'll be taking with him - the IMF must get the list. Barney plays a psychic who visits believer Gadsen and warns of someone coming who is ""closer then a brother"" (although Gadsen has no brother), then drugs Gadsen to react in pain to someone showing him the Death tarot card. Then Gadsen and his son Tony meet ""Professor Gadaradz,"" who is Gadsen's lookalike (actually IMF guest-agent Scott). When Gadaradz has a heart attack, the IMF show Gadsen a Death card and he feels sympathetic pains. Barney convinces Gadsen that Coffin kidnapped and is now torturing Gadaradz - Gadsen breaks into Coffin's estate where Willy has snuck in and is fake-torturing Gadaradz. When Gadaradz ""dies,"" and Gadsen collapses in pain, he gives the list (hidden in his watch) to his son Ton
The Doctor forces the guerrillas to take him to the 22nd century where he is soon captured by the Controller.
Murray takes on a night job as a cab driver in order to save up and buy his wife Marie a new car for their 10th wedding anniversary. However, Marie becomes suspicious about Murray's absences and fears that Murray is having an affair with Mary Richards.
Archie's paranoia during a mysterious government investigation drives him to betray a long-standing friendship.
Lamont buys a porcelain figure for $15 from a silent movie star and after having it appraised, Lamont and Fred decide to take it to an auction to make even more money on it. Fred and Lamont attend the auction pretending to be buyers so that the price can be jacked up higher. However, things go awry to Lamont's dismay.