November 1903: Clemence, young and inexperienced, is hired on a trial basis by Lady Marjorie, who decides Clemence is not an appropriate name for someone in service and changes it to Sarah. Being far too outspoken and having a tendency towards over exaggeration and drama, Sarah struggles to fit in and become accepted by the other servants.
Alex Pierson, a rising Syndicate member, has recruited Dr. Burke, a psychopathic behavioral psychologist who has developed a way to program men into killers. Pierson lures in underworld criminals with an offer of plastic surgery and turns them over to Burke, who programs them to kill Pierson's targets three times then kill themselves. Barney infiltrates as a crook on the run but when he fails to dose himself with a counter-drug, he is converted into a psychotic killer as well. They lose contact with Barney - Jim plants evidence on Burke making him look like he's turning against Pierson and another IMF agent made up to look like Barney goes after but fails to kill Pierson before fake-killing himself. Pierson confronts Burke while Jim gets the info on Barney's location out of Burke's assistant, and Willy stops the tech expert from killing his target in the nick of time.
Mary and Rhoda enroll in a night school course in journalism and Mary begins dating the lecturer.
Archie buys a gun to protect his family, but a pair of burglars hold the family at bay with Archie's own pistol.
Brett's family mansion seems to have been restored without his knowledge, and taken over by strangers. To find out why, he pretends to be the actor they have hired to impersonate him, and ends up helping the Prime Minister.
The Goodies take part in the Commonwealth Games as the British team against the August Bank Holiday Islands - with the entire Commonwealth at stake.
Greg buys his first car for $100 from his friend Eddie who made the car into something it's not. Finding that he has been stuck, Greg attempts to do the same thing Eddie did, when he tries to sell the car.
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".
An arachnophobic gourmet columnist seeks help from a woman he spurned when he discovers a hairy, and obstinate, little guest crawling in his kitchen sink. A mother and father learn the hardships of parenting. A careless braggart foolishly exaggerates his meager talents to a crackpot surgeon. A widower investigates an unusually strict military academy for his delinquent son.
Next Stop, Italy! The Stephens enjoy their vacation in a hotel overlooking the famous Leaning Tower of Pisa. Of course, Esmerelda pops in due to a lack of confidence. Esmerelda reveals that she made the tower lean by mistake when she was engaged to the builder. So Esmerelda takes it upon herself to right the wrong...by actually straightening the Leaning Tower of Pisa! The town totally freaks out when the famous tower is straightened correctly, and Esmerelda cannot remember what happened to make the Tower lean in the first place! A trip back in time helps her to remember. It seems that she tried to twitch up a tower sandwich for the builder and to make it lean, thus making the Tower lean again.
A private investigator kills his client's wife after she threatens to expose his blackmail scheme. The client then hires the detective to assist Columbo in the search for the killer.
Five-O is up against a sophisticated gang who have come to Hawaii to cash $750,000 of traveller's cheques.
After the murder of Police Captain Belding, his daughter, a rookie cop, is anxious to prove that the allegations of corruption against him were false. She hampers the Chief's investigations and generally gets in the way, but he takes a shine to her, and has her drafted onto the team.
After Julie picks up a blind hitchhiker, they have a flat tire and flag down a passing car for help. Unfortunately, the people in the car trick them into switching cars and abandon them in the desert.
Lucy Carter, a widow with two teen children, takes a job as a secretary for her stuffy brother-in-law.
Joe is shot and wounded while he is on a cattle drive in the Nevada desert. Two ranchers find him, delirious from thirst and the heat, and take him to their home to recover. While the ranchers summon a doctor, Joe struggles for life, mumbling incoherently and having surrealistic nightmares about a teepee and a wagon wheel. Ben and Hoss try to dechipher Joe's ramblings to piece together what happened.
Two underworld leaders, Hatcher and Thorne, have called a conference of Syndicate leaders to form a massive holding/laundering company. The IMF must obtain their joint Swiss bank account number. Jim gets in as a mobster and sabotages the tram that is the only way to the meeting. Willy slips in as a repairman and Casey lures down Thorne, whom they capture and then offer to return to Hatcher in exchange for the exact amount the mob leaders invested. He gets scammed into losing the money and Barney replaces the money in the safe with counterfeits. The IMF makes it look to Thorne like Hatcher kidnapped him then let him escape. When it is revealed the money is counterfeit Jim ""rescues"" him from being killed by the mobsters, then give Hatcher (with a weak heart) a fake heart attack as they escape down the tram. Hatcher gives Jim the bank account number and the team slips out of the tram with the $4 million while the weakened Hatcher remains behind - when he gets to the bottom he and Thorne k