They Used Dark Forces gs-8
by Dennis Wheatley
On a cloudless night in June 1943, Gregory Sallust parachutes into Nazi Germany. His mission is to penetrate the secrets of Hitler's "V" rockets. But before he can reach his objective, he becomes unwillingly involved with Ibrahim Malacou hypnotist, astrologer and son of Satan. Though their long and uneasy partnership is sustained by a common hatred of the enemy, their decision to use occult forces to destroy Hitler will imperil Gregory's immortal soul...