London's most notorious murderer walks its streets once more. Whitechapel, 1917. Jerry Reinhart, an American fighter-pilot, returns to London to convalesce after losing an aerial joust with the German ace, Baron von Richtofen. Sick and unstable, he loses himself in the seedy streets, unaware that he has brought back something unspeakable with him from the Western Front. Something that begins to take on the shape of a killer who was never caught. As the bombs rain down on old London town, a man named Jack is being reborn.