Jim Phelps poses as an amnesia victim in order to retrieve a stolen isotope, one that could make nuclear weapons affordable to any country.
The Earthlings become involved with a superstitious Irish Giant who believes they're leprechauns.
The Royal Philharmonic Orchestra goes to the bathroom, a footballer is interviewed and Batley Townswomen's Guild re-enact the invasion of Pearl Harbour.
Directors of the Capitol Land and Development Company are being killed. They have the tender for the Cupid project, an underground government headquarters in the event of a nuclear war. Clues such as a red nose and a giant footprint lead the Avengers to a home for retired clowns, irate that the project will flatten a sainted variety theatre and with an agenda of their own.
Peter comes home from school with the measles, so naturally, Carol calls the doctor, her doctor, who happens to be a woman. Meanwhile, Mike calls his doctor, a man. Soon all the kids come down with the measles and the household is in an uproar in yet another battle of the sexes, as the girls want a female doctor and the boys want a male doctor.
A classy, resourceful panther has plenty of hilarious misadventures, outwitting those who annoy him with his clever tricks.
Hogan prods Sergeant Schultz to reveal the site of a secret atomic installation that Schultz has been assigned to guard.
The Cannon family runs the High Chaparral Ranch in the Arizona Territory in 1870s.
A member of Mark's basketball team becomes involved with a gang stealing to order. Mark is determined to get to the boy before the police do, to persuade him to give himself up, but the boy's employer has other ideas.
A career criminal, Connors, fools McGarrett and the team into protecting the wrong bank, and robs a nearby one, taking the wife of the manager hostage. Things turn ugly when one of his goons assaults and murders her. McGarrett must race to capture Connors before he can do any more damage.
Native American Tony Wade has taken his family into bleak country to perform his Vision Quest in order to reclaim his spirit. Bronson, an old friend of Tony, locates him and the family and finds them in dire straits. Even though Tony, his wife Linda, and son, are underfed and malnourished, Tony still demands that Bronson leave. Linda urges Bronson to stay and reveals a secret she has not told Tony.
Air Force ace Jetstream Bradford joins his Uncle Drysdale's bank.
Con artist Admiral Nathaniel Johnson takes on the trio and teaches them the art of the con. They comply and become enamored of the Admirals ways and realize too late they are being conned themselves.
Lucy Carter, a widow with two teen children, takes a job as a secretary for her stuffy brother-in-law.
Fitzhugh and Steve accidentally return to Earth in a space-time pod but end up in 1900 and must deal with hostile villagers.
Featuring a bank robber in a lingerie shop, It's A Tree (with Arthur Tree), a vocational guidance counsellor, Ron Obvious and a gorilla librarian.
With Miss King out of action nursing a broken ankle Steed goes it alone when Scotland Yard colleague Sir Arthur Doyle brings him in on a murder enquiry, with an abundance of clues, each one pointing to an illustrious suspect. In fact bogus cops Earle and Gardiner are operating a racket whereby they deliberately incriminate worthies as murder suspects and then blackmail them. Their latest target is Steed and his supposed victim is Miss King.
Carol is to sing in church on Christmas, but days before the event, she loses her voice. Later at the mall, a hopeful Cindy asks a Santa Claus to bring Carol's voice back by Christmas. Meanwhile, Alice and the kids find it a difficult task hiding Christmas gifts in the house.