A man known to be a mute is suspected of committing a murder, as he was noticed at the scene. However, witnesses saw and heard him talking as he was leaving the scene of the crime. The police must determine if he is the actual killer or if he is being framed.
Dr. Bernard Adrian is a kindly scientist who seeks to cure a young woman's polio. He needs human spinal fluid to complete the formula for his experimental serum. Meanwhile, a vicious circus ape has broken out of its cage, and is terrorizing the townspeople. Can there be a connection?
A scientist is turned into an ape man.
It is prior to the commencement of World War II, and Japan's fiendish Black Dragon Society is hatching an evil plot with the Nazis. They instruct a brilliant scientist, Dr. Melcher, to travel to Japan on a secret mission. There he operates on six Japanese conspirators, transforming them to resemble six American leaders. The actual leaders are murdered and replaced with their likeness.
Medical intern Robert Morley is distraught after his wife dies in childbirth. He's resentful of his new son and wants nothing to do with him. He leaves the child with his aunt and uncle and heads off to Europe to pursue his medical studies. Morley returns to his hometown six years later, now a successful doctor and engaged to be married to a beautiful socialite. He also feels differently about the boy and attempts to gain custody from his aunt and uncle.
Four scientists and a newsman crash land on Mars and meet martians who act friendly.
Chris Morrell, the guardian of half-Indian girl Nina, is helping her find her missing white father. so she can cash in on her late mother's oil lease. Outlaw Sam Black is after the girl and her father as well. Besides dealing with the Black gang, Morrell has to find another robber, Jim Moore, who switches clothes with him after he finds Chris unconscious from a fight with Sam Black. Along the way, he meets a lady who's the sister of Jim Moore, another bad hombre who's in cahoots with Jim Moore, and an old friend who takes in Nina and helps Chris locate Nina's father and fight off the various desperadoes
The East Side Kids try to fix up a house for newlyweds, but find the place next door "haunted" by mysterious men.
During World War II, a small plane somewhere over the Caribbean runs low on fuel and is blown off course by a storm. Guided by a faint radio signal, they crash-land on an island. The passenger, his manservant and the pilot take refuge in a mansion owned by a doctor. The quick-witted yet easily-frightened manservant soon becomes convinced the mansion is haunted by zombies and ghosts.
Crooks plot to steal a payroll being shipped by air.
A spunky young bellhop investigates the murder of a hotel guest.
A treasury agent on the trail of counterfeit money confides to fellow ocean liner passenger, Charlie Chan, that there have been two attempts on his life.
Insurance agent-physician collects on policies of men murdered by a disfigured resident of the home for the blind where he acts as doctor-on-call.
Two friends land in hot water when they begin dating twins and one of the women ends up dead.
Four survivors of a ship wreck are stranded on a deserted island, including a woman and the man she believes is responsible for the murder which her brother is in prison for.
Rod Cameron stars as frontier scout Tim Clay, assigned to guide a wagon train through Indian territory. Clay knows that he's in for a lot of trouble because of the treaty-violating activities of white criminals Pickett and Keane. Fortunately for the hero, Pickett and Keane double-cross each other somewhere along the line, weakening their ability to foment an all-out Indian attack.
After three men are convicted of bank robberies, Charlie becomes suspicious. After some investigation Charlie finds the men are innocent and that the fingerprint evidence used to convict them had been forged. Charlie then proceeds to find the true bank robbers.
Thirteen years after a dinner party in which the thirteenth guest failed to arrive, the remaining guests are being murdered one by one, and their bodies being placed at the same dinner table in the appropriate seats they occupied thirteen years prior.
A scientist keeps his wife young by killing, stealing the bodies of, and taking the gland fluid from virgin brides.
Police try to solve a murder on board an ocean liner.