Dr. Cassandra and her husband Cabala are behind a string of invisible robberies, thanks to their camouflage pills. When Batman, Robin, and Batgirl attempt to stop their next theft, the crooks turn them into 2-dimensional figures with their ray gun. Dr. Cassandra then begins work on her final plan - releasing all the super criminals from prison to join her invisible force.
Lecturing on a law course at a local college, the Chief finds that one of the students is planning to prove that the perfect crime can be committed. The person responsible appears to be particularly cold and calculating, and the Chief finds that he is facing true genius.
Granny thinks her favourite T.V. soap opera is real. She invites the star to the Mansion because on the show he was sick & she wanted to Doctor him. When she thinks she's cured him off he goes back to work. Next day Granny sees him sick on T.V. again,so this time asks Jethro to take her to the T.V. studio because something there must be making him sick. When they arrive He's in the operating theatre & Granny takes him home so he'll get better under her care.
The Jupiter 2 lands on a planet which serves as a junkyard. The Robinson's food supply is dwindling. So Dr. Smith tries to sell the robot and the ship in order to get food. Can Dr.Smith be stopped?
Tony makes a bet with Roger that Jeannie would never fall for another man. This leads to Tony disguising himself as a British officer. However, things get sticky when Jeannie falls for the "British" officer and Tony becomes jealous.
Carol and guest Imogene join together to portray Congressional wives, astronauts in space still dealing with earthly romances and Olympic athletes with different approaches concerning men. Korman is the neglectful husband Dracula. Mel solos "That's All"
A friend of Heath's has been carrying on a correspondence courtship with a woman who is to be his mail-order bride.
Matt and former outlaw Elihu Gorman go after Dobie Price who has just broken jail.
Billy Blue Cannon quits the ranch after a quarrel with his father and leads a peace representative of the President to Cochise. On the trail Blue falls in love with Kelly's adopted Apache daughter, Moonfire. Kelly, an idealistic dreamer, meets Cochise's demands for a strip of land separating the High Chaparral from Tucson. This would cut the Cannons' supply route and threaten them with bankruptcy. John, angered by the peace terms and his son's choice of a wife, prepares to defend the ranch against the Apaches.
Paul helps Barbara Sherwood (Susan Trustman) investigate what she believes to be the suspicious drowning of her sister in Italy.
Hogan is asked to immobilize the entire German 6th SS division—10,000 men—for two days, while the Allies organize a surprise attack. The task seems impossible, especially in the presence of the two stern Gestapo colonels who are filling in for a vacationing Colonel Klink.
A rich man named Baron von Vondervon is giving a race for 17 year old girls in memory of his daughter (Ivonna) who disappeared 5 years ago; the winner of the race will be treated as his daughter. A greedy man named Mr. Free Load elists the aid of a driver named Lolly. After trying to past himself as a woman during the race Mr. Free Load discovers that one the other drivers is Ivonna and proply kidnaps her. After Speed saves Ivonna, Trixie and her finish the race with Trixie first and Ivonna second. The Baron recognizes Ivonna as his daughter but she does not want to leave her family at the orphanage. So the Baron gives half his fortune to Ivonna, the other half to the orphanage and invites the children of the orphanage to live on his estate.
Speed and his family are on the way to the Grand Prix (which is the key race for the World Racing Championship) and their plane is forced down on to an island by a storm. On the island they find out: that the both the plane's and Mach Five's radios have been smashed; every other passenger is in a hurry to get where they are going; there are no plants on the island, and that the island is a likely a forgotten top secret base used during a war. Since the island is uncharted Speed has no idea where to send the homing robot nor if the oxygen would last long enough to get help. Speed learns that one of the other passengers has brought advertizing balloons. Using hydrogen from the base Speed turns the Mach Five into a dirigible, then they draw lots to see which three people will go to get help. After the drawing, Trixie gives her lot to a girl whose mother is dieing, and the rich man buys a lot from one of the other winners. Spritle and Chim Chim stow away and force Speed to throw everything
Captain Kirk must find the cure to a deadly disease and put an end to another Starfleet captain's cultural interference.
When a lonesome Jewish girl comes to stay at Convent San Tanco while her parents are away on vacation, Sister Bertrille takes on chief babysitting duties--and perhaps goes too far in the Big Sister department before little Linda Shapiro announces she wants to become a nun too.
A friend of Ironside's turns out to be an amnesiac victim without a past. The need to discover who she really is comes to the forefront when somebody tries to kill her, and it becomes clear that the Chief's hopes for a long term relationship might not be possible with this particular girl.
The Joker is back in Gotham City, this time with his sights set on worldwide domination. He plants rumors of an invasion from outer space, then sets out to gather the Beryllium metal needed to build an actual flying saucer. Batman picks up on his scheme and sends Alfred to check up on a stash of the metal. But when Alfred is mistaken for a mad scientist by the Joker, he is hauled off to the villain's lair along with Batgirl. The Dynamic Duo are on their way when a bomb planted by one of the Joker's henchmen goes off, leaving them unconscious, and their Batcave cut off from the rest of the world.
Miss Jane & Jethro attend a violin recital.(Jethro sleeps through most of it) Miss Jane suggests Jethro takes violin lessons. Maestro Stromboli arrives to teach Jethro to play,but Jed & Granny think its he who should take lessons. Jethro buys a fiddle from a pawn shop & asks Stromboli how much he paid for his. Stromboli tells him the high priced amount & Jethro tells him he thinks he got taken. Stromboli's annoyed with Jethro "" This is a Stradavarious...Ignoramus."" Jed invites Fiddlin' Sam Dingle to teach Stromboli how to play 'turkey in the straw' & they have a Ho Down.
Doctor Smith uses the Space Pod to land on a planet that the Jupiter II is passing by. It turns out that the planet has evolved in such a way that plants are the highest form of life, and some of them are quite intelligent. One of these plants, a large carrot, captures Smith and tries to change him into a plant. The Jupiter II lands and the Robinsons and West come to Smith's rescue, only to be captured themselves. Eventually they thwart the plant creature and make their escape.
ony states his admiration for Mrs. Bellows and Jeannie takes it the wrong way.Jeannie asks Haji to take her powers away. He agrees to do so for one week. While Jeannie tries to cope with housework the old-fashioned way, Tony is wishing for Jeannie's powers back. Amanda Bellows pays Jeannie a visit and decides Jeannie needs a divorce.