When Emergency Room doctor Brian James' car flew off the Portland bridge, he had no idea that he was being thrown into a world of deadly assassins, cryptic cults, and otherworldly beings, known as watchers. Now, months later, Brian and the stunning watcher Aella must follow a faint trail of clues and rumors to track down the clandestine secret society that ordered Brian's murder and find out why they are killing other watchers. Along the way they'll have to fight off hidden foes, evade the menacing Vigiles, and transcend two divergent worlds while delving into ancient cathedrals and analyzing modern medicine. And unless they can uncover the truth-while avoiding the vicious watcher set on destroying them-their two worlds are going to collide with unspeakable consequences.