Molly Hartley is all grown up, but the unholy demon inside her lives on. Six years after graduating high school - and discovering that a secret pact assigned her soul to the devil - Molly is suspected of murder and confined to a mental hospital, where she wreaks supernatural havoc on the staff and patients. Her only hope is an exorcism by a defrocked priest looking to redeem himself and save Molly's life before her hideous "transformation" is complete...but Satan has other plans!

It's an experiment in human behavior. It's an exploration of the most natural of animal impulses. It's something new under the moon. And it bites. When security dispatcher Aaron Scates is blinded in an explosion, he's put in the care of Dr. Andrea Hewlitt, famous in her field for spearheading extraordinary-though controversial-medical breakthroughs. Her newest is cross-species organ transplants, and Aaron is her first human subject. When a severely wounded wolf is brought to Dr. Hewlitt's office by museum curator Lydia Armstrong, Dr. Hewlitt leaps on the opportunity and successfully transplants the wolf's eyes to Aaron-despite Lydia's objections. Aaron, however, is thrilled. Not only can he see again, he can see in the dark. He also has an unusually acute sense of hearing, and tears into a raw steak like never before. Unfortunately, he also tends growl...