After being convicted of thirteen barbarous murders—including that of his pregnant wife—Eric Adair has been sentenced to spend the remainder of his life alone in a cell at the Institute for the Criminally Insane. The only problem is that Eric hasn't been alone in a very long time.

Eric's soul has been possessed by an ancient demon who has spent years twisting the young man's mind, forcing him into actions that satisfy his own evil whims... urges that have long gone unsated with Eric's incarceration. But now the demon is looking for a new soul to corrupt... and wants Eric's help to do it.

Lenore Maine is a beautiful young woman, haunted by her mother's death. Those around her share Lenore's fear that the madness she believes runs in her family is now coming for her. But her mother's death may not be the only thing haunting her nights. Are her dreams of passion and pain real, or is Lenore plagued by something worse than she ever imagined? And will Lenore succumb to the horrors of possession or does she alone have the strength to bring an end to the demon's long reign of terror?

And what will become of Eric in the process? Will the demon keep his promise to release Eric in exchange for Lenore or will his soul be damned forever?