The Return of Sherlock Holmes

YouTube
S1 | E11 | Airdate: 04/27/1988
A young man is found brutally beaten and murdered on a railway line leading from the Undergound. Strange plans of a secret submarine are found in his pocket. Is he a hero or a traitor? Aided and abetted by the master detective's brother Mycroft, Holmes and Watson follow a trail through fog-shrouded London to find the truth, and the murderer.