A couple of comical, out-of-work archaeologists (Dick Foran and Wallace Ford) in Egypt discover evidence of the burial place of the ancient Egyptian princess Ananka. After receiving funding from an eccentric magician (Cecil Kellaway) and his beautiful daughter (Peggy Moran), they set out into the desert only to be terrorized by a sinister high priest (George Zucco) and the living mummy Kharis (Tom Tyler) who are the guardians of Ananka^
Ten years have passed since the death of millionaire, Cyrus Norman. Cosby, Cyrus' attorney, has gathered Cyrus' 6 remaining relatives to his New Orleans' mansion for Cyrus' "reading of the will". To the others disappointment, Joyce is the sole heir, but, due to a streak of insanity running in the family, a second will has been made in case Joyce falls victim to it. This puts Joyce in danger. Suddenly, Miss Lu, Cyrus' maid, appears and warns them that the spirits have told her that one of them will die that night. Following this, Hendrick, a prison guard, warns them that, "The Cat", a homicidal maniac has escaped. This sets up Cyrus' relatives...
In World War II, a British secret agent carrying a vitally important document is kidnapped en route to Washington. The British government calls on Sherlock Holmes to recover it.
Professor Moriarity has a scheme for stealing the crown jewels from the Tower of London. To get Holmes involved, he persuades a gaucho flute player to murder a girl.
Carol Clayton is the daughter of a horse breeder at Saratoga. Though engaged to wealthy Hartley Madison, and disgusted by bookie Duke Bradley, her father owes Bradley a lot of money and Bradley takes a shine to her.
In 1908, Sultan Abdul Hamid rules the Turkish Empire, but he is faced with the threat of revolt by the Young Turk party. He allows Hilmi Pasha, the leader of the Young Turks, to return from exile and form the country's first constitutional government. With tensions still growing, chief of police Kadar Pasha assassinates Hassan Bey, the leader of the Old Turk party, and makes it look as if a Young Turk committed the crime, in order to give Abdul an excuse for arresting the Young Turk leaders. Meanwhile, Abdul becomes infatuated with a visiting Austrian singer. When she rejects his advances, she endangers both herself and her fianc
A young man visits his fiancée in a remote French villa where her scientist father resides. There he meets Noel, Dr. Renault's mysterious assistant, who has a strange attraction to Renault's daughter. Soon he learns Noel's true identity: he is an ape that was turned into a man by Renault's bizarre experiments!
A group of strangers are brought together in an old, dark house and must contend with two murders and $50,000 in stolen money.
Marianne de Beaumaniour is on her way to New Orleans from Paris to inspect the plantation she inherited from her uncle. On the ship with her are bondsmen, that are to be sold for slavery. Charles, Duc de Villiers, a political enemy of the king, is also aboard posing as a bondsman. Charles is bought by Marianne's plantation manager and she is quickly taken by Charles' charm. Marianne soon discovers Charles' true-identity and she sets him free, before, the French officers find him. Marianne decides to sail back to Paris with the Police Captain on the ship, 'New Moon', but, they must first stop at Martinique. After Martinique, the ship is invade...
Curious about the effects of an ancient Mayan nerve gas on humans, a scientist exposes his young assistant and turns him into a mindless ghoul that must have human heart substance to live.
A high priest travels to America with the living mummy Kharis (Lon Chaney Jr.) to kill all those who had desecrated the tomb of the Egyptian princess Ananka thirty years earlier.
A serial killer in London is murdering young women whom he meets through the personal columns of newspapers; he announces each of his murders to the police by sending them a cryptic poem. After a dancer disappears, the police enlist an American friend of hers, Sandra Carpenter, to answer advertisements in the personal columns and so lure the killer.
While Charlie is distracted with the birth of his first grandchild, son Jimmy impersonates his father in order to investigate a murder aboard a freighter in the harbor.
After escaping from an asylum the mad Dr. Niemann and his hunch back assistant revive Count Dracula, the Wolf Man and the Frankenstein monster in order to extract revenge upon their many enemies.
An Egyptian high priest (John Carradine) travels to America to reclaim the bodies of ancient Egyptian princess Ananka and her living guardian mummy Kharis (Lon Chaney Jr.). Learning that Ananka^
When Dr. Hugo Robbin's laboratory is blown up, his nurse Ann Loring is charged with murdering the doctor. During her trial, a group of children continually disrupts the courtroom, claiming to have important evidence. The children are finally allowed to testify, but as a result of their testimony, their friend Dan, who runs a repair shop, is now charged with the crime instead of the nurse. The children are now determined to prove Dan's innocence, and they go to the abandoned laboratory to look for evidence, leading to a series of hazardous adventures.