Scotland Yard detectives attempt to solve a spate of safe robberies across England beginning with clues found at the latest burglary in London. The film is notable for using a police procedural style made popular by Ealing in their 1950 film The Blue Lamp. It is known in the US as The Third Key.

In this crime drama, an escaped convict is recaptured and charged with killing two people in a lonely waystation during a snowstorm. Fortunately, a novelist is around to prove him innocent.

Ruth Hoagland grows up on the Florida Keys with no companion other than her father, a half-witted fisherman who spends most of his time hunting for buried treasure. Vacationing yachtsman Bob Winthrop and Ruth fall in love, but Winthrop returns to New York, and after a year, has forgotten Ruth. After finding two chests in a cave, Ruth locates her father unconscious from a fall. She goes to the mainland for help, but returns with the Reverend Josiah Arbuthnot and Dr. William Strong, to find her father dead. Strong, out of kindness, offers to marry her, but Ruth declines, sure that Winthrop will return.

Three older sisters live on their family estate in Wales. This household once proudly reigned over a mining town, but the mines dried up and the estate and the town have fallen on hard times. When the land crumbles and a number of homes in the town are destroyed the sisters promise to rebuild the homes.

In Tiger Bay, the docklands of Cardiff, rough-and-tumble street urchin Gillie witnesses the brutal killing of a young woman at the hands of visiting Polish sailor Korchinsky. Instead of reporting the crime to the authorities, Gillie merely pockets a prize for herself — Korchinsky's shiny black revolver — and flees the scene. When Detective Graham discovers that Gillie has the murder weapon, the fiery young girl weaves a web of lies to throw him off course.

A dashing ex-officer in His Majesty’s army, Captain Adam Corbett (Calhoun) becomes embroiled in intrigue when he agrees to escort Colonel Wilfred Jackson (Ian Hunter) and his daughter Pauline (Patricia Bredin) on a perilous quest for treasure. Possessing one-quarter of a map, they soon rendezvous with three mysterious characters, each with a fragment and a secret agenda. Armed with only a sword and his wits, Corbett battles brigands, soldiers and thieves as he accompanies the expedition to the island of Monte Cristo, where betrayal and fortune await.

Two Welsh coal-mining brothers win a trip to London to claim a monetary prize. They are supposed to meet a newspaper reporter who will be their escort. Instead, the brothers are launched into an adventure with some London riff-raff. It is up to the reporter to look out for the brothers, and what a job it turns out to be!

Jewel thieves, murder, and a manhunt swirl around a sailor off a cargo ship in post-war London.

When Fred Watson's wife and landlady disappear, and he is seen papering over two cupboards in his bedroom, the police are called in.

In ancient Judea, a Jewish aristocrat opposing Roman occupation of his homeland reunites with his childhood friend, now a Roman commander — setting in motion a saga of betrayal, adventure, tragedy, revenge, and faith.