Hank McHenry and Johnny Marshall work as power company linesmen. Hank is injured in an accident and subsequently promoted to foreman of the gang. Tensions start to show in the road crew as rivalry between Hank and Johnny increases.

The small-town prudes of Lynnfield are up in arms over 'The Sinner,' a sexy best-seller. They little suspect that author 'Caroline Adams' is really Theodora Lynn, scion of the town's leading family. Michael Grant, devil-may-care book jacket illustrator, penetrates Theodora's incognito and sets out to 'free her' from Lynnfield against her will. But Michael has a secret too, and gets a taste of his own medicine.

A Los Angeles fire captain (Roy Roberts) sends an arson-squad rookie (George Cooper) undercover.

A con man heading west to search for gold teams up with a pair of scheming brothers along the way. The trio soon find themselves in the middle of a feud between two rival families and two underhanded land developers.

Mary Smith decides after a lifetime of being a shut-in to do something wild while her father is out campaigning for the presidency, so she takes off for the family's home in West Palm Beach and inadvertently becomes romantically entangled with earnest cowboy Stretch Willoughby. Neither the dalliance nor the cowboy fit with the upper class image projected by her esteemed father, forcing her to choose.

An ex-gunfighter woos two women while avenging his brother, victim of a crooked gambler.

A wealthy society doctor decides to research the medical aspects of criminal behaviour by becoming one himself. He joins a gang of thieves and proceeds to wrest leadership of the gang away from its extremely resentful leader.

As novice detectives, Bud and Lou come face to face with the Invisible Man.

Nightclub owner Steve Larwitt sees his empire of investments collapse as he faces tax evasion charges and attacks by rivals. Believing Steve will be safer in prison for one year, his wife, Brenda, testifies against him on advice from his lawyer, Slant Kolma, who is in love with her. After Steve receives 10 years in Alcatraz, Brenda moves to be near him and avoids advances of airplane builder Tim Nolan, who knows nothing about her past.

After two gang-related killings in "Center City," a suspect (who was framed) is arrested, released on bail...and murdered. Inspector Briggs of the FBI recruits a young agent, Gene Cordell, to go undercover in the shadowy Skid Row area (alias George Manly) as a potential victim of the same racket. Soon, Gene meets Alec Stiles, neurotic mastermind who's "building an organization along scientific lines." Stiles recruits Cordell, whose job becomes a lot more dangerous.