Evil comes from the past… A secret with the power to change the world…. It is 1501 - a medieval Knight encounters an object of awesome power: the Nubian Deathstone. Filled with terrifying visions of what the future might bring, he embarks on a quest to discover its secret.
It is 1941 - Himmler orders an elite SS Officer on an expedition to resolve the centuries-old enigma, but his discovery will have dire consequences.
Now Alex Devereux, former cavalry Major and hardened mercenary, takes on a lucrative mission that leads him into deepest Africa. Working for a diamond cartel and operating outside of international law, Alex comes face-to-face with the Dark Heart Prophecy. Past and present collide - but can Alex redeem himself and prevent the prophecy from coming true?