Think Fast, Mr. Moto (1937)

Basado en un cómic de los años 30. "La Sombra" es un misterioso personaje que posee la facultad de hacerse invisible. Cuando no se encuentra combatiendo el mal, "La Sombra" toma la personalidad de Lamont Cranston, un playboy millonario. En esta aventura, "La Sombra" va a enfrentarse al despiadado Shiwan Khan, descendiente del terrible Genghis Khan. Khan y a su secuaz Claymore, que planean hacerse con el control de una poderosa y mortífera arma, creada por el profesor Reinhardt Lane.

A Japanese man claiming to be Mr. Moto, of the International Police, is abducted and murdered soon after disembarking from a ship at Port Said in Egypt. The real Mr. Moto is already in Port Said, investigating a conspiracy against the British and French governments.

A drifter claims the money in an old bank account. Soon he finds himself the target of two men who turn out to be the sons of the man's old partner, who is now in prison because of a conflict with him over the money in that account.

A private detective is hired to find a young heiress but finds himself accused of murder.

A woman uses a deck of cards to predict death within 24 hours for a stranger sitting at a bar, then tries to help him remember who he is based on items in his pockets.

When his import/export business infiltrated by international diamond smugglers, Mr. Moto must follow a trail of clues littered with beautiful women, glittering gems and deadly assassins. Making his way from the mysterious streets of San Francisco's Chinatown to the dark and dangerous alleys of Shanghai, Mr. Moto will stop at nothing to bring the culprits to justice...even if it means making the ultimate sacrifice!

Attorney Wayne Fletcher and his secretary have an affair. When Wayne's wife is found smothered to death, he becomes the prime suspect. As the police investigate the murder, a psychic with questionable motives tries to contact the deceased woman. Soon, Wayne begins seeing visions of his dead wife, and other people involved with the case begin to be killed, one by one.

Losing his memories of the last few days, neurologist Dr. Steele is told that his wife has been brutally murdered. Steele, aware of his conniving wife's infidelity, believes he may have been the killer and enlists the aid of his pretty nurse Stella to hypnotize him into recovering his lost memories.

Artist David Stuart is blinded by a jealous assistant / model. His fiance's father generously offers his eyes for a sight restoring operation. There's only one hitch: Stuart has to wait until after the man dies. Not surprisingly, when the benefactor dies a very premature death, suspicion falls on the artist.

When a woman goes missing on the eve of her wedding, her fiancee hires a detective to track her down

A dying millionaire marries his nurse for companionship, only to experience a miracle cure.

In this drama, a trucker's business is nearly destroyed after he is wrongfully accused of killing a policeman with whom he recently quarreled.

When a man dies of a heart attack, a stage and radio mentalist believes he has willed him to die because he was angry with the man. Riddled with guilt, the mentalist cancels further shows, breaks off his engagement to his female partner, who can read minds while in a hypnotic trance, and takes refuge in the eerie wax-museum-cum-home of another woman friend.

A guilt-ridden man blames himself for his wife's death and secretly pays an assassin to kill him. But then he finds out that his wife isn't dead at all. And now the assassin is on his trail, with no way to call off the hit.

Celebrated as supersleuth, Mr. Moto comes out fighting when a brutal boxing match turns into cold-blooded murder! Assisted by detective-in-training Lee Chan, Moto sets out to track down the killer based on a single ominous clue: a poisoned boxing glove! But when Moto's hunch points to a corrupt gambling syndicate, he's forced to wager his very life to unmask the culprit—or go down for the count...permanently!

In the 7th film of the "Crime Doctor" series based on the radio program, Dr. Robert Ordway is summoned to take attend a diabetic, and gives an injection of insulin taken from a bottle in the patient's pocket. The man dies and Ordway discovers that what he thought was insulin was really poison. Oops! Two other people are murdered before Ordway discovers who replaced the insulin with poison and what the motive was

The Japanese detective rounds up a league of assassins for Scotland Yard.

A deranged artist who may have murdered his wife is investigated by the Whistler.

While on vacation, a criminal psychologist investigates a murder during a typhoid epidemic.

In the jungle near Angkor Wat in Cambodia, Mr. Moto poses as an ineffectual archaeologist and a venerable holy man with mystical powers to help foil two insurgencies against the government.