Movies that feel like The Man Who Knew Too Much (1956)

On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.

American crime reporter John Jones is reassigned to Europe as a foreign correspondent to cover the imminent war. When he walks into the middle of an assassination and stumbles on a spy ring, he seeks help from a beautiful politician’s daughter and an urbane English journalist to uncover the truth.

Richard Hanney has a rude awakening when a glamorous female spy falls into his bed - with a knife in her back. Having a bit of trouble explaining it all to Scotland Yard, he heads for the hills of Scotland to try to clear his name by locating the spy ring known as The 39 Steps.

When bookish CIA researcher Joe Turner finds all his co-workers dead, he, together with a woman he has kidnapped, must work together to outwit those responsible until he determines who he can really trust.

While recording sound effects for a slasher flick, Jack Terry stumbles upon a real-life horror: a car careening off a bridge and into a river. Jack jumps into the water and fishes out Sally from the car, but the other passenger is already dead — a governor intending to run for president. As Jack does some investigating of his tapes, and starts a perilous romance with Sally, he enters a tangled web of conspiracy that might leave him dead.

Aircraft factory worker Barry Kane flees across the United States after he is wrongly accused of starting the fire that killed his best friend.

In order to help bring Nazis to justice, U.S. government agent T.R. Devlin recruits Alicia Huberman, the American daughter of a convicted German war criminal, as a spy. As they begin to fall for one another, Alicia is instructed to win the affections of Alexander Sebastian, a Nazi hiding out in Brazil. When Sebastian becomes serious about his relationship with Alicia, the stakes get higher, and Devlin must watch her slip further undercover.

A quiet and inconspicuous man rents an apartment in Paris where he finds himself drawn into a rabbit hole of dangerous paranoia.

While vacationing in St. Moritz, a British couple receive a clue to an imminent assassination attempt, only to learn that their daughter has been kidnapped to keep them quiet.

Near the end of the Korean War, a platoon of U.S. soldiers is captured by communists and brainwashed. Following the war, the platoon is returned home, and Sergeant Raymond Shaw is lauded as a hero by the rest of his platoon. However, the platoon commander, Captain Bennett Marco, finds himself plagued by strange nightmares and soon races to uncover a terrible plot.

A mathematical genius discovers a link between numbers and reality, and thus believes he can predict the future.

When a string of jewel robberies hits the French Riviera, suspicion falls on retired thief John “The Cat” Robie. To clear his name, he sets out to trap the copycat himself—entangling a wealthy widow and her beguiling daughter in a seductive game of pursuit, deception, and desire.