Sherlock Holmes' brother Mycroft seeks the great detective's assistance when the plans for the Bruce-Partington submarine are stolen. Three of 10 stolen documents were taken from a now dead junior office clerk, Cadogan West, and their location is now unknown. The man responsible for the plans, Sir James Walter, mysteriously dies following the theft supposedly of shame, according to the dead man's brother, Colonel Valentine Walter. After studying the facts of the case, Holmes isn't convinced that Cadogan West is the real culprit and is more likely the victim of a more elaborate plot. Written by garykmcd