Sherlock Hound
The White Cliffs of Dover (1x10)
:
The London Airpost is failing due to planes being sabotaged. When one of the planes crash lands near Baker Street, Holmes and Watson rush to the scene only to find their landlady save the pilot before them. Moriarty has been sabotaging the planes in hopes of earning tons of money off of limited edition stamps. Holmes, Watson, Mrs. Hudson and all the men of the airpost quickly set out to stop him.