Achtung! Cthulhu is a terrifying World War Two setting. This is the Investigators Guide, with everything players need to create and run characters in the late 30s and 40s.

Discover the secret history of World War Two: stories of amazing heroism, in which stalwart men and women struggle to overthrow a nightmare alliance of steel and the occult; of frightening inhuman conspiracies from the depths of time; of the unbelievable war machines which are the product of Nazi engineering genius – and how close we all are to a slithering end! The Secret War has begun!