The gang takes a trip to the carnival to escape their ghost-chasing troubles, only to find Dick Van Dyke owns and operates the park.. .which is haunted.
Flashback Episode: Oscar gets married and spends the wedding night in the Army barracks.
Marcia's got a new job working after school at a ice cream parlor. With both school and work, Marcia has little time for her boyfriend who, fed up comes into the parlor with another girl. Meanwhile, Marcia suggests Peter for a job but when he goofs off she is the one who fires him.
Following up a clue found on a dead agent Steed and Miss King pose as a married couple ,enabling them to infiltrate the Alpha Academy, where they claim they wish to enrol their 'son'. The academy is run by Brigadier Brett and is supposedly for youngsters who possess super-intelligence but it is in reality a training ground for a force who seek not global but extra-terrestrial domination.
Lamont has decided to go in on a partnership with Julio in a used auto parts business venture and Fred becomes convinced that Lamont is abandoning their junk business. Against the whole notion, Fred decides he's not going to stay where he's not wanted and gets a bed at the local mission. Lamont and Julio cook up a scheme in order to lure him back to his home.
The Protectors go after industrial spies who are threatening to topple a chemical company by scooping their best products.
Sketches include a visit to the tourist office of a country behind the iron curtain, there is an explanation about symbols used on television, there is a visit to the Limerick Clinic for a bad back, there is performance by a guitar duo, we hear that Ronnie's wife has won two competitions, and the main production this week is The Regiment, which is set in Rawlpore, India. The performances in this episode are by Pan's People, who perform a dance routine to "Yesterday", and the singer Elaine Delmar.
A flute-playing "Pied Piper" (played by Ricky Nelson) talks teenage girls into prostitution, then disposes of them when they are no longer convenient. Stone's daughter helps him break up this murderous prostitution ring.
The Commissioner's niece makes a bet that she can sleep for one night in the master bedroom of a haunted house, then disappears without trace. The team decide to stay the night as well, but the Chief also vanishes. He finds himself alone, surrounded by ghostly figures, sinister statues and whispered messages, whilst Ed, Mark and Fran try to find out where he has gone.
The Country Fair has come to Walton's Mountain. Grandma has entered a quilt in the competition. Ben sells a pig for the greased pig contest and Olivia's old suitor, now politician, visits the fair.
While wandering in Mexico, Caine comes across an old woman and a young boy. The woman is trapped under a cart and asks Caine to take care of the boy. He takes him to a small Mexican village which believes it is under the spell of a warlock.
Kojak has two hours to free the hostages from three robbers in an Army surplus store.
The killing of an important pimp threatens an all out war between two competing vice empires.
Tony's girlfriend is apparently run down in a parking garage, but nobody will give him a straight answer as to which hospital the body was taken. When a mysterious uncle suddenly claims the body, Tony suspects something is awry. The investigation spells D-A-N-G-E-R when somebody tries to kill Tony by knocking him out and setting fire to the barn he's in.
Lucy Carter, a widow with two teen children, takes a job as a secretary for her stuffy brother-in-law.
Kitty and Matt are off for St. Louis, until Matt is summoned back on business. Upset with him, Kitty sets off for herself meeting a gunslinger on the stage who ends up saving her life. He goes back to Dodge with her and proceeds to court her. Kitty has a hard decision. Leave Matt after 18 years of a relationship or stay with Stambridge.
Jill Danko is seriously wounded by a seemingly demented gunman while dining with her husband Mike. Later, they find out that the gunman is unable to be prosecuted in court, because he is suffering from a brain tumor which appears to be the cause of his action. The rookies take it upon themselves to prove the man is dangerous and can place society in jeopardy.