Father Unwin discovers that a gang of bogus vicars are responsible for a series of sabotage attacks on military installations and vehicles. After one ofthe gang is hospitalised after their latest venture, Unwin masquerades as his replacement, a demolition expert, to infiltrate the gang, but he is soon exposed as an imposter.
A country is unaware that its premier is dead and that a double is about to appoint a successor. So Barney Collier concocts a mechanical man to take his place.
A giant scientist performs cloning experiments on the Earthlings.
The gang, at the college museum, gets the lead on a dead Egyptian ruler named Inca. According to an ancient superstition, if he were ever removed from his crypt, he would turn the people who moved him into stone. Shaggy finds a rare coin that the Professor is trying to study. The trouble begins when Shaggy accidentally takes the coin and the mummy is on the loose looking for it.
When three thousand army rifles are stolen Steed suspects the visiting Colonel Nsonga, who is planning a revolution in his home country in Africa. Actually a mercenary woman called Adriana has the guns, which she auctions off to the highest bidder. This turns out to be Nsonga and the chase leads to the grounds of Adriana's house where the arms are stored and due to be tested on a human target - Miss King!
A defecting Field Marshal tailed by Major Hochstetter to Stalag 13 needs Hogan's help to get to England.
Blue falls in love with an attractive houseguest but the romance is marred when the girl and her father reveal the true purpose of their visit. Promoter Gar Burnett and daughter Trece charm their way into being invited to the Chaparral Ranch as part of a scheme to blackmail John Cannon. Enamored of the girl, Blue refuses to believe that Trece was aware of her father's plot.
Several agents have been murdered by someone with incredible strength. The only clue is an empty banana peel. It is soon deduced that the killer is an ape. CONTROL agents are receiving bananas in the mail and then being murdered, completely puzzling CONTROL. What they don't know is KAOS is using Chucko, an ape made to look like a human being, as the assassin. The plot thickens when Max receives a banana in the mail and a new agent, Chuck Armstrong, is assigned as his protector. Unfortunately, Armstrong is actually Chucko the Ape. Before Max discovers Armstrong's real identity, Armstrong reverts back to Chucko and takes 99 to the roof of Max's building, just like in King Kong.
Taking an important witness from Hawaii to San Francisco by plane, Ironside discovers that a fellow passenger is a hitman. He has to find out who is trying to kill his witness before the plane lands; but there may be more than one person trying to claim the reward for an open contract.
Darrin has a ball with his newfound magical powers. With his powers, Darrin creates a stellar account with his client, Bliss, jr. and shows Larry his powers. It isn't until Darrin meets his old friend, Dave, and decides to give up his magic.
Bronson accepts two percent of a potential oil well, that is possibly ready to blow, in lieu of cash for work done for Royce MacLeod. Unfortunately, MacLeod faces foreclosure on the land if he can't beat the target date specified on a promissory note owned by Mac Keller.
Shorty (Shug Fisher) goes West for a fling at the wild life.
An assassination attempt on a prominent politician, Charles Irwin, leads Five-O to Mike Finney, a former racketeer who has been clean for nine years. However, Finney insists he is innocent, and the trail of clues leads right back to Irwin.
Young Sister Bertrille uses her ability to become airborne to help others, whether they want it or not. Although her aims are always benevolent, her means are often bemoaned by Mother Superior. The other Sisters must cope with their beloved Sister's aerodynamics and antics as she flies in and out of trouble.
It is figured out that in order for Jeannie to be married, one of her uncles must approve of the husband to be. Two uncles end up showing; Vasmir and Azmir; and causing a whole heap of trouble for Tony.
Julie poses as a singer at a Country Western bar to find out the real reason behind Wild Bill Hannachek's death.
Festus acts as guide and driver for a Eastern missionary teacher on route to her first assignment. The only problem is trying to stay ahead of a murderous hillbilly family following them and planning a ambush.
Lucy Carter, a widow with two teen children, takes a job as a secretary for her stuffy brother-in-law.
Aunt Bee's friend Selma Plunkett is coming for a visit. Selma invites Aunt Bee, Sam, and Mike to stay at their Palm Springs home for a couple weeks while they're in Europe. At first they decline the offer, but Selma talks them into it. Goober, Howard, Emmett and Millie come by to say hello to Selma. Selma says it's a 5 bedroom house, so they all should go. Everyone makes arrangements to go and Sam just has to go to school to get Mike out of class. Mike informs Sam that he's flunking arithmetic because of his problem with fractions. Mike's teacher tells Sam that there will be another test in one week and if Mike can get a better grade, she wouldn't mind if he went on the trip. Everyone tries working with Mike, but things don't go that well. It's the day of the test and Mike isn't very confident. Everyone is thrilled when they learn Mike did well on the test. They plan to leave the next morning.