Disc 1. Sherlock Holmes And The Secret Weapon: Starting in Switzerland, Sherlock Holmes rescues the inventor of a bomb-sight which the allies want to keep from the Nazis. Back in London, it appears that the inventor is not all that he seemed.
Disc 2. Dressed To Kill: A convicted thief in Dartmoor prison hides stolen Bank of England printing plates inside three music boxes. When the innocent purchasers of the boxes start to be murdered, Holmes and Watson investigate.
Disc 3. Terror By Night: Holmes is hired by Roland Carstairs to prevent the theft of the Star of Rhodesia. Believing the diamond will be stolen on a train trip from London to Edinburgh, Holmes deftly switches the diamond. Soon after, Roland is murdered and the fake diamond is stolen. Holmes, aided by Dr. Watson and Inspector Lestrade, discovers the murderers hiding place and deduces that long-time foe Moriartys henchman Colonel Moran is somehow involved.
Disc 4. The Woman In Green: Black