A cab driver nearly hits a man with amnesia, then helps him unravel his past, only to discover he's a murder suspect as she falls for him.

Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot.

David Fielding, who has recently lost his wife, moves into a new neighborhood under a cloud of suspicion. Many feel that his wife's death in a car crash was no accident. Elizabeth Howard, the governess he hires to look after his children, makes it her mission to find out the truth. When other murders seem to be following David to his new town, Elizabeth investigates with the help of David's son Barnaby.

Someone is attempting to steal radium stored in a bank. Death by cobra venom connects a number of murders. Charlie Chan investigates.

Chinese sleuth Charlie Chan discovers a scheme for the theft of government radar plans while investigating several murders.

Chan is faced with suspects in a stolen atomic bomb formula case, that are being killed with bullets that are not fired from a gun.

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.

The spirit of an executed murderer enters the body of a physician, and forces him to do its bidding--namely, murder.

An estranged wife shows up after a nearly 7 years of disappearance -- thought to be dead, to prevent her husband from marrying his new love until someone kills her.

The latest assignment for respected detective Charlie Chan has come directly from the government and involves the disappearance of a scientist named Harper, who was working on an extremely important serum. When the scientist is killed, Chan must sort through all very likely suspects, including the man's sister and his butler.

The Good Comrades are a collection of varied gentlemen who crave one thing - solitude. They reside at Drearcliff House, ancestral home of their eldest member. All seems serene and convivial until one by one the members begin to perish in the most grisly of manners. Foul play is suspected by the Good Comrades' insurance agent, who turns to Sherlock Holmes and Dr. John Watson for guidance.

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.

While on vacation, the Falcon is arrested for kidnapping after striking up a friendship with a girl whose nurse has been recently murdered.

Sylvie, a young woman who believes to be cursed, lives in the town of Carcassonne with her guardian, Mr. Toulzac. He is a retired teacher who wishes to discover the secret of the Cathars, a Christian sect of the Middle Ages that glorified death over life. Sylvie meets Roland, a composer who instills new hope into her troubled mind. Mr. Toulzac then asks her then to renounce the world and go down a secret tomb he has just found.

An adolescent believes that his widowed mother's suitor may have murdered his father.

A scientist who is working on a cure for influenza is victimized by his unscrupulous boss, who releases the vaccine before it's ready, resulting in the death of the scientist's son.

After the King of Ruthenia has been assassinated, Holmes and Watson are engaged to escort his son to Europe via Algiers, aboard a transatlantic ocean liner which also carries a number of suspicious persons, any of whom may be involved in a plot to also assassinate him.

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.

Julia Ross secures employment with a wealthy widow and goes to live at her house. Two days later, she awakens in a different house in different clothes and with a new identity.

Pete Marshall is sent as a replacement to the mountain district town of Plainville when a public opinion surveyor who went there goes missing. Visiting the hillbilly family of Mamie Fleagle, Pete begins to suspect that she and her two sons have murdered the surveyor. Pete then believes that Mamie is slowly poisoning wealthy Grandma Fleagle, who has put a vital clue to her fortune in a nonsensical embroidered sampler.

In the early part of this century, Maddelena a teenage Italian girl, is attacked whilst walking in the woods. The attack leaves her mentally scarred and our story flashes forward to the 1940s where Maddelena is still troubled. She disappears one day and her daughter vows to find her.

When a man asks another man more facile with words to do his wooing for him, there are always complications. The man with no talent for writing marries the girl, confesses one night he didn't write the letters and ends up with a knife in his back. The writer of the letters fell in love with the woman he wrote to and wants to become her second husband even if she did murder husband number one. Singleton doesn't remember the murder or anything about the first 22 years of her life as Victoria Remington. Then at her second wedding she wonders why she said "I take you, Roger," instead of "I take you, Allen."

While watching from her train window, Nikki Collins witnesses a murder in a nearby building. When she alerts the police, they think she has read one too many mystery novels. She then enlists a popular mystery writer to help her solve the crime on her own, but her sleuthing attracts the attentions of suitors and killers.

Newlyweds (George Murphy, Carole Landis) drag their lawyer friend (Pat O'Brien) to a mountain resort on a search for a missing magician.