Something powerful and sinister is taking shape. Around the world, continents are ravaged by famine and cities battered by extreme weather. In the historic Turkish city of Ruin, a sudden plague sweeps through the Citadel, the oldest inhabited place on Earth and home to the Sancti monks, killing almost all of the ancient brotherhood within. Only the return of one woman - by any means necessary - will stop them dropping like flies. As Liv Adamsen pieces together how she ended up in hospital, she knows she is a wanted woman. But she doesn′t remember what she has seen or done that has put her in such grave danger. Slowly, something unknown stirs within her - something which terrifies her. Charity worker Gabriel Mann knows he is the only person Liv can trust to protect her. He desperately searches for Liv amidst the chaos gripping the city, but she is already gone. Hunted and half-a-world apart, their journeys to discover their true identities will cause them to span the globe. What awaits them is a shocking and terrible answer, one which will shatter their bond and change the world forever.