The North Atlantic, 14 April 1912. Amid the chaos of the sinking Titanic, a young Eleanor Annenberg meets the eyes of a stranger and is immediately captivated. As the ship buckles around them, she follows him down into the hold and finds him leaning over an open sarcophagus, surrounded by mutilated bodies. She catches but a glimpse of what lies within before she's sucked into a maelstrom of freezing brine and half-devoured corpses.

Elle is pulled out of the water, but the stranger - and the secrets she stumbled upon - are lost. Unintentionally, however, he leaves her a gift; one so compelling that Elle embarks on a journey that pulls her into a world of ancient evils, vicious hunters and human prey to find the man who saved her that fateful night.

From trench warfare at Cape Helles in 1915 to a shipwreck in the tropical shallows off the Honduran coast, from a lost mine beneath the towering Externsteine in a Germany on the verge of war to the gothic crypts of Highgate Cemetery in London, Elle gets closer to a truth she has sought for most of her life. But at what cost? Gifts, after all, are seldom free.