The Sign of Four (1987)

Holmes and Watson board a passenger train bound from London to Edinburgh, to guard the Star of Rhodesia, an enormous diamond worth a fortune belonging to an elderly woman of wealth; but within the first hour of the trip, the woman's son is murdered and the diamond stolen and any of the passengers in their car could be the killer thief.

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.

When Watson reads from the newspaper there have been two similar murders near Whitechapel in a few days, Sherlock Holmes' sharp deductive is immediately stimulated to start its merciless method of elimination after observation of every apparently meaningless detail. He guesses right the victims must be street whores, and doesn't need long to work his way trough a pawn shop, an aristocratic family's stately home, a hospital and of course the potential suspects and (even unknowing) witnesses who are the cast of the gradually unraveled story of the murderer and his motive.

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 nobleman is threatened by a family curse on his newly inherited estate, detective Sherlock Holmes is hired to investigate.

Now a detective-for-hire like her infamous brother, Enola Holmes takes on her first official case to find a missing girl, as the sparks of a dangerous conspiracy ignite a mystery that requires the help of friends — and Sherlock himself — to unravel.

Sherlock Holmes and Dr. Watson meet as boys in an English Boarding school. Holmes is known for his deductive ability even as a youth, amazing his classmates with his abilities. When they discover a plot to murder a series of British business men by an Egyptian cult, they move to stop it.

Belgian sleuth Hercule Poirot's Egyptian vacation aboard a glamorous river steamer turns into a terrifying search for a murderer when a picture-perfect couple's idyllic honeymoon is tragically cut short.

A TV adaptation of the classic Alexandre Dumas novel. Edmond Dantes is falsely accused by those jealous of his good fortune, and is sentenced to spend the rest of his life in the notorious island prison, Chateau d'If. While imprisoned, he meets the Abbe Faria, a fellow prisoner whom everyone believes to be mad. The Abbe tells Edmond of a fantastic treasure hidden away on a tiny island, that only he knows the location of. After many years in prison, the old Abbe dies, and Edmond escapes disguised as the dead body. Now free, Edmond must find the treasure the Abbe told him of, so he can use the new-found wealth to exact revenge on those who have wronged him.

The famous Borgia Pearl, a valuable gem with a history of bringing murder and misfortune to its owner since the days of the Borgias, is brought to London, thanks in part to Sherlock Holmes. But before long the jewel is stolen, due to an error on Holmes' part, and shortly thereafter, a series of horrible murders begin, the murderer leaving his victims with their spines snapped and surrounded by a mass of smashed china.