Private detective Johnny Fletcher and his sidekick Sam Cragg skip out on their rented room, but when they sneak back to retrieve their luggage, they discover a dead body on the bed, holding a gold coin in its hand. Fletcher is told by a coin collector that the piece is an old and valuable Spanish...
Sach just lost his job as an assistant to a private detective, but he wasn't paid. Slip goes with him down to the detective's office to demand payment, but finds the office empty. A woman enters the office and mistakes Slip for the detective and convinces him to take on a case to find her sister...
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.
The boys are working at the local boxing arena where their friend, Jimmy Higgins, is boxing. During a crooked match Jimmy is killed. The boys seek out his older brother, Johnny, a former boxer who gave up the sport rather than go crooked, and help train him to get back in the ring. They try to get...
Jan Horak is a middle-aged railroad dispatcher stationed at a forsaken spot in the desert, within driving distance of the nearest town. A widower, he has saved his money and goes to town to buy a dog, meets Betty, a flashy blonde who gains his confidence and marries him to acquire his $7,000...
Sach is the exact double of a famous French scientist who has invented a powerful rocket fuel. Enemy agents, mistaking Sach for the scientist, attempt to kidnap him and get the formula for the fuel.
Slip and Sach's boss, David J. Thurston, has allegedly committed suicide. Slip finds a book of matches with the name of a local nightclub on his boss' desk and finds out from Gabe that a gambling casino is being run out of it. Slip comes to the conclusion that the club had something to do with his...
The boys buy a uranium mine out west, but when they get there they find that it's pretty much worthless. However, the local badmen are distrustful of these new strangers, and when they mistakenly get the impression that the mine is loaded with uranium, they hatch a scheme to get rid of the boys and...
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.
At the offices of Consolidated Producers Corporation, producer Tony Paton is determined to make a film about the great African American chemist, George Washington Carver. His backer, Murphy, is skeptical about the marketability of such a project, but Paton convinces him that it is time to depict...
After Slip is drafted into the Marines, the rest of the gang volunteers so they can be with him. Sach discovers that the colonel knew his father and he is promoted. During a drill that he is putting the rest of the gang through, they find a soldier left for dead on the side of the road. Slip...
