Murder at Midnight

Detective Sherlock Holmes and Dr. John Watson join forces to investigate a mysterious murder at Buckingham Palace. It seems like an open-and-shut case as all signs point to Professor James Moriarty, the criminal mastermind and longtime nemesis of the crime-solving duo. When new twists and clues begin to emerge, the world's greatest sleuth and his trusted assistant must now use their legendary wits and ingenious methods to catch the killer as they only have four days before the queen becomes the next victim.

When Captain Howland decides that his daughter Tess is getting a bit to old to continue to go to sea with him, they move into a small cottage on the coast of Maine, but not for long. A local millionaire, Frederick Garfield, lays a false claim to the property and has them evicted. Later, when Tess saves a young man about her age from drowning, she is a bit dismayed to learn that he is Garfield's son. But when her father is jailed on a false-accusation charge of murder, the younger Garfield comes to their aid and proves he himself.

In 19th century Paris, a maniac abducts young women and injects them with ape blood in an attempt to prove ape-human kinship but constantly meets failure as the abducted women die.

Frank Johnson, a sole witness to a gangland murder, goes into hiding and is trailed by Police Inspector Ferris, on the theory that Frank is trying to escape from possible retaliation. Frank's wife, Eleanor, suspects he is actually running away from their unsuccessful marriage. Aided by a newspaperman, Danny Leggett, Eleanor sets out to locate her husband. The killer is also looking for him, and keeps close tabs on Eleanor.

A lovely dame with dangerous lies employs the services of a private detective, who is quickly caught up in the mystery and intrigue of a statuette known as the Maltese Falcon.

Infamous burglar "The Bat" commits a daring jewelry theft despite heavy police presence. Soon after, a bank theft occurs, which may be the work of the criminal as well. Meanwhile, Cornelia Van Gorder has various people arrive at her old mansion, including her niece, Dale, a bank employee, and police detective Anderson. When guests start turning up dead, Cornelia begins to suspect that The Bat may be lurking around the estate.

Sir Borotyn, a prominent Prague resident, is discovered murdered in his home, with all indications pointing to a vampire assault. The victim's friend, Baron Otto, and the physician who analyzes the body are certain that the vampire is the mysterious Count Mora, or perhaps his daughter, but receive little help from the law. Professor Zelen, an expert in the occult, is called in to assist with the investigation.

In Victorian era London, the inhabitants of a family home with rented rooms upstairs fear the new lodger is Jack the Ripper.

One of the last of the silent Sherlock films.

A wisecracking New York reporter intrudes on a research scientist's quest to unmask The Moon Killer.

A husband and wife detective team takes on the search for a missing inventor and almost get killed for their efforts.