Sherlock Holmes: The Naval Treaty

Watson, Do you think you could bring your friend, Mr Sherlock Holmes, down to see me? My position at the Foreign Office seemed safe until this horrible disaster. I fear my career is ruined! War becomes a real possibility after a top-secret document is stolen from the Foreign Office. But why has the thief waited ten weeks to sell the treaty? Holmes and Watson are plunged into a world of international diplomacy only to find that danger can come from unexpected quarters.