Dean Koontz - Hideaway

Following a traffic accident that left him clinically dead for more than 80 minutes, a Southern California antique dealer named Hatch Harrison begins experiencing strange dreams and visions that connect him to a psychopathic killer who calls himself "Vassago".

The killer believes that he is the human incarnation of one of the demon princes of Hell, and that if he murders enough innocent human beings and offers them up in sacrifice to his Master, he will be allowed to return to the afterlife and rule at Satan's right hand.

He also has a strange condition that enables him to see in the dark, but also causes his eyes to be extremely sensitive to light.