In the middle of the night, an explosion rocks Cambridge, Massachusetts and wakes Saul Signalman from bed. Blue, ethereal light pulses into the sky. A FaceTime call pulls him away from the view. It's his wife, consumed in light, bidding him farewell. And then--the call ends. The explosion of light intensifies. The power goes out. Electronic devices stop working. In the dead of night, he races to his wife's lab at the explosion's core, but the building is missing. His wife is gone. All that remains is a test subject: Rain, a woman with no memory, whose eyes glow when she comes into contact with unseen forces, whose body lights up the night when monstrous nightmares descend on Boston, and whose creators will do anything to get her back. Pursued by a rogue government agency, Saul goes on the run with the only person who might be able to explain what happened to his wife. Rain might be able to reveal what kind of person Saul's wife really was, and how to stop the otherworldly terrors