The Man Who Knew Too Much (1934)

A Scotland Yard undercover detective is on the trail of a saboteur who is part of a plot to set off a bomb in London. But when the detective's cover is blown, the plot begins to unravel.

A man on the run from a murder charge enlists a beautiful stranger who must put herself at risk for his cause.

A man in London tries to help a counter-espionage Agent. But when the Agent is killed, and the man stands accused, he must go on the run to save himself and stop a spy ring which is trying to steal top secret information.

After three British Agents are assigned to assassinate a mysterious German spy during World War I, two of them become ambivalent when their duty to the mission conflicts with their consciences.

An American physician and his wife take matters into their own hands after assassins planning to execute a foreign Prime Minister kidnap their son.

On the eve of World War II, a young American reporter tries to expose enemy agents in London.

A juror in a murder trial, after voting to convict, has second thoughts and begins to investigate on his own before the execution.

While travelling in continental Europe, a rich young playgirl realizes that an elderly lady seems to have disappeared from the train.

After killing a man in self-defense, a young woman is blackmailed by a witness to the killing.

In Cornwall, 1819, a young woman discovers she's living near a gang of criminals who arrange shipwrecks for profit.

A landlady suspects her new lodger is the madman killing women in London.

An aircraft factory worker goes on the run after being wrongly accused of starting a fire that killed his best friend.