Rumours are rife that secrets have been sold to foreign lands, sparking a scandal that threatens the very foundation of the Royal Navy.

Professor Elgar, Director of Dockyards, and his officials of the Admiralty are in turmoil. Confidential plans and drawings of torpedo vessels and torpedoes have been leaked and the hunt for the elusive Torpedo Turncoat has begun.

Despite relentless efforts, the Admiralty and dockyard officials are stumped, their search for the traitor fruitless.

Channel your inner Sherlock Holmes, follow the clues and discover if you have what it takes to solve a mystery lost to history. Only the sharpest minds will triumph.