When Sach eats too much sugar, he goes into a trance whereby he's able to predict the future. Slip tries to make some money off of Sach by using him as a fortune teller in a carnival, until a mad scientist kidnaps Sach to use him in an intelligence-switching experiment with a monster.
When a cold medicine causes Sach to be able to smell diamonds, he and the rest of the Bowery Boys are induced by a diamond dealer to accompany him to Darkest Africa in search of a legendary cache of them.
Slip and Sach take the rap for a robbery they did not commit in order to uncover the real robbers, whom they suspect are led by a convict who gives orders to his gang outside via a short-wave radio stashed somewhere in the prison.
When one of the Boys agrees to be hypnotized, he discovers he led a past life in the 1600s as a British tax collector.
An overambitious shutterbug almost gets his lights put out permanently when he decides to snap a picture of a mob boss.
Sach learns that he has inherited a farm in rural hillbilly country, and when he and the Boys arrive there, they find themselves mixed up with a hillbilly clan named Smith who'll shoot anybody named Jones, plus a gang of bank robbers.
Slip and the gang stray from newspaper work to detective work.
Slip, Sach and the gang (Bowery Boys) think an air-raid test is for real and join the Army.
The Bowery Boys (Bowery Boys) open a nightclub after Sach has his tonsils out and wakes up with a singing voice.
The boys get mixed up with a race horse & crooked gamblers
Sach and the gang baby-sit a bratty TV star.
Slip and the gang (Bowery Boys) foil foes of the exiled, incognito king of Truania (Sig Ruman).
Sach and the gang (Bowery Boys) find stashed cash in an old farmhouse apparently haunted.
The Bowery Boys tangle with Scotland Yard, diamond smugglers and a gem-toting canine during an ocean cruise.
While Louie is on vacation, the boys turn The Sweet Shop into an escort service, and soon find a group of beautiful girls as their first clients.
Sach and the gang (Bowery Boys) fool Nazis and a sultan in North Africa.
Slip and Sach (Bowery Boys) go to prison to help a reporter with a story.
The Bowery Boys come to the rescue when a corrupt taxi company puts the squeeze on several independent drivers.
One of the Bowery Boys gains superhuman strength, and he cashes in by becoming a pro wrestler.
After being punched in the nose, Sach finds out that he has the ability to read minds. Slip and the gang start up a detective agency try to cash in on Sach's new powers.