Set in London during World War II, a thrilling murder mystery where the world's greatest detective must uncover the truth behind a seemingly impossible series of high-profile assassinations.

London, 1943.

Across the city, prominent figures in science and the military are bursting into flame and being incinerated. Convinced that the Germans have deployed a new terror weapon, a desperate government turns to the one man who can track down the source of this dreadful menace-Sherlock Holmes.

The quest for a solution drives Holmes into an uneasy alliance with the country's most brilliant scientific genius, Professor James Moriarty. Only Sherlock Holmes knows the truth that behind his façade of respectability, Moriarty is the mastermind behind a vast criminal empire.

As they together pursue the trail of incendiary murders, Holmes is quite sure that Moriarty is playing a double-game-and that there lies ahead a duel to the death from which they will not both survive.