Scientists assembled to prove their methods are effective in criminal investigation try to solve a series of murders.

Jack Holt stars as Robert Bailey, a Henry Ford-like auto industrialist who decides to give his millions away to various charitable causes. Naturally, this arouses hostility amongst Bailey's friends, relatives and associates, some of whom have murder on their minds.

An innocent trucker takes it on the lam when he's accused of robbery.

Truck drivers Steve Hackett and Bill Purvis are fired from their jobs with the West Coast Trucking company for not using second-gear going down steep grades. Davis, the company vice-president, surprisingly asks them to carry a load of merchandise to Arrowhead and offers a $1000 bonus. He tells them it is a load of lettuce. Several miles out of Los Angelese, they are stopped by a mob of lettuce-farm workers on strike. When the first crate is tossed off the truck, it explodes and the two pals learn their merchandise is a cargo of dynamite. The workers let them proceed and they crash into a car driven by Mary Stevens, whom they had met at a restaurant. She and her dog, "Butch" (played by a Credited dog named Stooge), join them and they deliver their cargo, and learn unscrupulous real-estate operators have jammed the locks on the dam in order to ruin the ranchers and farmers and take over their property.

A Chinese-American surgeon faces a moral dilemma after operating on the mob boss in charge of vice and protection rackets in her city's Chinatown.

After being hired to find an ex-con's former girlfriend, Philip Marlowe is drawn into a deeply complex web of mystery and deceit.

One of the last bills signed by President Lincoln authorizes pushing the Union Pacific Railroad across the wilderness to California. But financial opportunist Asa Barrows hopes to profit from obstructing it. Chief troubleshooter Jeff Butler has his hands full fighting Barrows' agent, gambler Sid Campeau; Campeau's partner Dick Allen is Jeff's war buddy and rival suitor for engineer's daughter Molly Monahan. Who will survive the effort to push the railroad through at any cost?

Dr. Henryk Savaard is a scientist working on experiments to restore life to the dead. When he is unjustly hanged for murder, he is brought back to life by his trusted assistant. Re-animated he turns decidedly nasty and sets about murdering the jury that convicted him.

A hard-working mother inches towards disaster as she divorces her husband and starts a successful restaurant business to support her spoiled daughter.

A behind the times Chicago bootlegger goes to England with his lawyer to claim his estate as the Earl of Gorley.