When lives intertwine during Christmas, hope is the only unifying gift. After suffering a personal tragedy, a social worker throws herself into finding homes for children in need.

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...