In the historic Turkish city of Ruin, American journalist Liv Adamsen wakes up in an isolation ward. She knows she entered Ruin's forbidden ancient Citadel but remembers only darkness. A strange whisper within says she is `the key': but to what? For the desperate fanatics inside the Citadel, only her return can secure their survival. Charity worker Gabriel Mann, meanwhile, believes Liv could unlock mankind's most profound mystery. And for a powerful global faction, Liv's silence—at any cost—is all that matters. Hunted across continents, Gabriel and Liv approach an explosive discovery—one that will tear them apart and change the world forever...
