When a woman is found dead with her throat torn out, the local villagers blame a supernatural monster. But Sherlock Holmes, who gets drawn into the case from nearby Quebec, suspects a human murderer.
A female bail-bond broker and her partner help an accused embezzler prove his innocence. Having the body of the embezzler's late business partner pop up doesn't help matters.
When a treasure hunter seeks a downed airplane in the jungles of Africa, he encounters one of the passenger's young daughter, now fully grown, and with a gorilla protector.
A rich but miserly old man taunts his relatives about who will get his money when he dies, and is soon mysteriously murdered. It turns out that he has left his estate to a beautiful young actress whom the other relatives didn't know was related to him. Several attempts on her life are thwarted by a detective, who sets out to discover who's behind the scheme to kill her.
Sherlock Holmes investigates a series of so-called "pajama suicides". He knows the female villain behind them is as cunning as Moriarty and as venomous as a spider. Based on "The Sign of Four" and the short stories "The Dying Detective", "The Final Problem", "The Speckled Band" and "The Adventure of the Devil's Foot".
Captain Stone's newly recruited officer, Tom Merriam, idolizes his senior who treats him like a friend. But when a couple of his crew members die mysteriously, Tom starts doubting Stone's authority.
During WWII several murders occur at a convalescent home where Dr. Watson has volunteered his services. He summons Holmes for help and the master detective proceeds to solve the crime from a long list of suspects including the owners of the home, the staff and the patients recovering there.
After young Mary Gibson discovers that her older sister Jacqueline has disappeared, she leaves her boarding school and heads to New York City to track down her sibling. But Mary gets drawn deeper into the mystery.
One dark and stormy night, an escaped convict, an embezzler, a runaway daughter, her intended and her father, and a gangster take refuge in a remote inn called "The Black Raven" after the nickname of a second gangster who owns it; and murder ensues.
A forger is forced to work for a Nazi spy ring. His conscience gets the better of him, though, and he secretly conspires with the FBI to turn over the gang.
After one member of their group is murdered, the performers at a burlesque house must work together to find out who the killer is before they strike again.
Newlyweds Webster and Jackie Frye spend their honeymoon in a sinister old country house. Before long, they are besieged by a gang of crooks, searching for a fortune in diamonds. With the help of chauffeur Harmony Jones, the honeymooners attempt to outsmart the villains.
When a small town doctor buries his twin brother, a practitioner of the black arts, he believes him dead; but subsequent events force him to realize that his brother has, in fact, returned from the dead as a vampire and is seeking revenge on the doctor, who had killed him in self-defense.
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.