Because of the war, a 12-year-old boy from England, Hugh, is sent to live with the Andrews family in Ohio. Don, the Andrews' 11-year-old son, eagerly accepts the English boy, and is happy when his school-friends do the same. But his isn't so happy when things begin to change when his father fore-goes their evening game of Chinese Checkers to play chess with Hugh, and Hugh shows himself to be a formidable scholar, and impresses Don's girlfriend Betty, and becomes more popular with the boys than Don was...and Don is beginning to think that Hugh is too much of a good thing. Don gets downright depressed and decides to run away. Uh, oh, here comes Hugh.

A paint store owner turns his attention to civic affairs while his business falls apart.

Four youthful cadets are implicated in a series of murders, and must attempt to clear themselves of suspicion.

Three American soldiers help a young girl deliver a secret message across enemy lines.

A young man befriends the last surviving Civil War veteran, intending to rob him of $50,000.

Crooks use a man's safe-cracking skills then involve him in more crime after he spends three years in jail. He falls in love with a waitress and they go to work for a traveling salesman.

An eccentric, wealthy spinster, 'Queenie' Baxter is erroneously presumed to be kidnapped. She subsequently pretends to indeed be kidnapped, , in order to allow a reward of $50,000 to benefit an impecunious family headed by Tony Orsatti and his three sons, Blackie, Doc and Flash.

A man wins $50,000 in a card game with gamblers, but is soon found dead and the money missing. Slip and Sach find the money near where the body was discovered, and soon find themselves the target of both the police and the gamblers.

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 after offering a $50 retainer.

Slip and the gang stray from newspaper work to detective work.

Late one night, secretary Paula Young (Ann Harding) leaves the office of her boss, Stanley Whittaker (Douglas Dumbrille, locking the door and taking the stairs to avoid being seen by the elevator operator (Frank Jenks). The next morning, the cleaning lady finds Whittaker's dead body, an apparent suicide. Police Lieutenant Poole (Moroni Olsen) finds a letter signed by Whittaker in which the deceased states he embezzled $75,000. Soon, however, he suspects otherwise and, after investigating, arrests widower James "Jim" Trent (Walter Abel), the vice president of Whittaker.

The boys get mixed up with a race horse & crooked gamblers

The Bowery Boys open a nightclub after Sach has his tonsils out and wakes up with a singing voice.

While Louie is on vacation, the boys turn The Sweet Shop into a male escort service, and soon find a group of beautiful girls as their first clients.

While working in a laundromat, the boys find a baby hidden among the linen. They soon find out that the baby, who is the heir to a fortune, has been abandoned by his mother so that her two evil aunts can't cheat her and the baby out of the inheritance. The boys determine to help the woman claim her baby's rightful inheritance from her aunts, who have hired gangsters to find and eliminate the girl, the baby and anyone who helps them.

The East Side Kids are pursued by killers seeking a stolen necklace.

Muggs and Glimpy, two East Side Kids in the army, return to their neighborhood, supposedly on furlough; actually, Muggs has been honorably discharged with a physical defect, but he tells no one of this. Danny, another East Side kid, is in jail because a large amount of medical supplies have been stolen from the warehouse where he works. Muggs see Spider, a new member of the gang, flashing a large amount of money around, and Muggs shrewdly turns toughie, boasting that he has a dishonorable discharge because of thievery. This leads Spider to confide in Muggs that he is the one who has been aiding in the theft of supplies from the warehouse, and he gets paid for the loot by Larry, operator of a nightclub where Muggs' sister, Milly, is an entertainer. Fingers, a henchman for Larry, kills Spider when he learns that Muggs has been let in on the operation. The police then suspect Muggs of killing Spider.

In ridding the area of muggers, the East Side Boys acquire a wealthy benefactor whose privileged son, unbeknownst to him, has fallen in with thugs.

An Ohio bank clerk's life becomes a nightmare when his descriptions is a fit of a maniac killer.

The Bowery Boys--Slip, Sach, Bobby, Whitey & Chuck--start their own exterminating service, and get a job which takes them to a spooky old abandoned mansion in the middle of the night. Meeting up with pal Gabe and his new French bride, the boys are tormented by mad scientists who try to convince them the place is haunted and then kidnap Sach in order to place his brain inside a gorilla.