
The Sign of Four
Mary Morstan comes to Holmes with a problem. The solution of that problem, however, will lead them clear to the moon! Mary's father had been killed in a mine accident on the moon years ago. Now Mary is finding out that the circumstances were strange then, and the sequel is even stranger now.
Player
Primary streaming server.
More from this season

S1 E1
The Fall and Rise of Sherlock Holmes
The pilot tells how Holmes survived in and came to be revived in the Holmes Museum. He anticipated two centuries' progress in cryogenics, preserving himself -- in honey! The criminal activity of Moriarty's clone prompts Inspector Lestrad, like her ancestor, to seek Holmes' help. Her compudroid so loves the Canon of Sherlock Holmes stories that it assumes the name and role of Dr. Watson.

S1 E2
The Crime Machine
This story introduces Martin Fenwick, who like Dr. Frankenstein is overwhelmed by his creation, a Moriarty clone and the 22nd century Baker Street Irregulars -- as always street-wise young people -- anti-grav chaired computer whiz Tennison, a Black would-be boxer Wiggins and a girl, Deidre.

S1 E3
The Hounds of the Baskervilles
A giant hound has been seen-and strangely enough, heard- on the moon. People are worried. It's up to Holmes, Watson, and Lestrade to expose what's happening and to catch who's responsible for it all. Of course, being jumped by the hound along the way doesn't help matters...

S1 E4