Third and final instalment in the thrilling paranormal adventure trilogy from acclaimed duo Mark Billingham and Peter Cocks.

Having narrowly escaped the clutches of the Hope Project, Rachel and Adam begin a new life in Australia. Their tranquillity is shattered, however, by the reappearance of Gabriel – and the terrifying adventure that they had hoped was over begins again. Hunted by enemies, old and new, their journey to discover the third, and final, Triskellion takes them home to New York, where they finally learn the chilling truth about their ancestry…