A cyber-attack disables NASA's Hubble telescope, as it looks deeper into space than ever before. The virus leaves this message: mankind must look no further. Is it a threat, or a warning? Rookie FBI Agent Joe Shepherd is uniquely qualified for the investigation, which could have global repercussions. Shepherd, though, has a secret mission of his own, one his FBI bosses know nothing about. In the historic Turkish city of Ruin, a lethal disease erupts in the ancient Citadel and spreads beyond its walls. Charity worker Gabriel Mann may hold the cure, but can one dying man stop an epidemic? Without him, former journalist Liv Adamsen is vulnerable, surrounded by strangers in the desert oasis that is her new home. Liv, however, has far bigger concerns. She knows something is coming. Something that can't be stopped. Something that will change everything. But will it be a new beginning or the End of Days?