A Depression-downtrodden waif uses her brains instead of her body to rise from tyro con artist to crime boss.

Romantic problems of a society girl and an engineer.

G-Man Jeff Crane poses as a crook to infiltrate the notorious Purple Gang, a band of hoodlums which preys upon other hoodlums. Orchestrating the jailbreak of the gang's leader, Crane joins him in a Dillinger-like flight across the country.

Infamous burglar "The Bat" commits a daring jewelry theft despite heavy police presence. Soon after, a bank theft occurs, which may be the work of the criminal as well. Meanwhile, Cornelia Van Gorder has various people arrive at her old mansion, including her niece, Dale, a bank employee, and police detective Anderson. When guests start turning up dead, Cornelia begins to suspect that The Bat may be lurking around the estate.

Chick Williams, a prohibition gangster, rejoins his mob soon after being released from prison. When a policeman is murdered during a robbery, he falls under suspicion. The gangster took Joan, a policeman's daughter, to the theater, sneaked out during the intermission to commit the crime, then used her to support his alibi. The detective squad employs its most sophisticated and barbaric techniques, including planting an undercover agent in the gang, to bring him to justice.

A gangster takes a doctor and his family hostage.

A mysterious hypnotist reverts his beautiful assistant back into the form of a prehistoric sea monster that she was in a past life.

A struggling writer becomes the prime suspect in a murder investigation when his publisher is found dead in a manner mirroring one of the writer's proposed mystery storylines.

Convicted of manslaughter for a drunken driving accident, Kent Marlowe is sent to prison, where he meets vicious incarcerated figures who are planning an escape from the brutal conditions.

Twelve people are aboard Coast Airline's flagship the Silver Queen enroute to South America when the airplane encounters a storm and is blown off course. Crashing into jungles known to be inhabited by head hunters, pilots Bill and Joe race against time to fix the engines and attempt a take off. The situation brings out the best and worst in the stranded dozen as they create a makeshift runway and prepare to escape before the natives attack. But damage to the plane and low fuel reserves means that only 5 people can be carried to safety.