Tim is off to spend the weekend at Tally-Ho Towers with his rich Great Uncle Butcher-Fitzsimmons. He is dressed as a Guardsman in the hope that this will impress the old man into leaving him all his money in his will. Bill and Graeme think this is despicable, disgusting - and a very good idea, so they invite themselves along.
Leonard Nimoy plays a heart surgeon whose talents turn to murder. Stung by jealousy, he's planning a surgical death for his brilliant but ailing associate. Will Geer plays the intended victim.
Bob and Emily try to decide if they should give up their apartment and buy a house.
The Doctor and Jo return to the Bernice to try and aid their escape but find themselves pursued by the Drashigs.
Murray becomes depressed when he realizes that the years are passing him by, after he learns that a contemporary has won a Pulitzer Prize.
Archie refuses to tag along to Edith's thirtieth high school reunion-- until he finds out that one of her beaus will be attending.
The crew of Los Angeles County Fire Department Station 51, particularly the paramedic team, and Rampart Hospital respond to emergencies in their operating area.
There's only one way Felix can get new costumes for his opera group: Oscar has to win the money in a pool game.
Marcia has a big problem when she inadvertently makes two dates for the same night. One with Charlie and the other with Doug, the big man on campus. She makes a excuse to Charlie to go out with Doug but quickly learns Doug was only interested in having a pretty girl on his arm after Marcia is hit in the face with a football.
Syndicate man Jay Braddock has corrupted promoter Paul Mitchell into working with him - they had middleweighter Loomis killed when he refused to throw a fight and the IMF must bring both men to justice. They do so by convincing Mitchell that his partner plans to kill him. Barney and Jim steal $37,800 from Braddock and then as a rival mob offer the partners the same amount to buy out their fighter Novick. Braddock decides to have Novick killed but the IMF intercept the call and send in Jim as the hit man. He ""kills"" Novick with a firebomb along with Susan Mitchell (actually Casey in disugise), the promoter's daughter. Mitchell tries to back out as the IMF pressure him, but Braddock messes things up by offering to kill Jim to reassure Mitchell. He manages to escape and they arrest both men.
A chicken fast food place wants the Partridges to appear in his commercials. Ruben signs the contract. The family agree because the commercial is supposed to be tasteful. However, there is a last minute change that is not so tasteful.
Next door neighbor, Julio, has become a very good friend of Lamont's. With Lamont, spending so much free time with Julio, Fred begins to feel left out and decides to try to be more like one of the guys. However, Fred quickly learns the advantages of having so much free time and no one to hoard in on it.
One witness in a racketeering trial is killed with a booby-trapped car, and Stone worries that the remaining witness, Roy Chaffee, will be picked off by a hit man if he surfaces.
It seems that the Waltons never officially registered the deed to Waltons Mountain. In order to help pay the legal fees, John-Boy leaves home for a job in the city. He meets new friends, gets mugged and earns a reward to help the family keep their home.
Caine's quest to meet his half-brother Danny leads him to a ranch where his sibling once worked, and plunges the priest into a confrontation where he proves his mettle by walking trough a pit of rattlesnakes.
The parents of a kidnapped young man give the trio a hard time with their silence.
Just before Cap'n Jack's seafood restaurant franchise is set to go public, millions of dollars in stock certificates are stolen from a non-stop elevator, leaving Banacek to find them before someone walks through walls with a fortune.
McGarrett and company must break through a tissue of lies in order to protect a Russian defector from being killed.
A former lawman that Dillon put out of business years earlier comes back with a group of men to gun him down. Since Dillon is out of town, they settle in at the Long Branch to play poker and wait. Kitty does the only thing she can do. She bets the entire town's wealth and Matt's life against the outlaw's hand.