In Book Three of The Grey Girl series, Chloe, Alex, and their team discover that trouble has followed them from the Van Tassel manor. Alistair, a powerful wizard, is hunting Chloe, and he wants vengeance. Chloe is about to learn that there are more than ghosts, witches, and demons to battle. In a long-deserted hospital hidden deep in the Allegheny Mountains, an innocent girl is held captive and tortured at the hands of a mad doctor. Her blood holds the key to his diabolical experiments. Now Alistair has formed an uneasy partnership with the doctor, whose evil may equal his own. But can their evil defeat Chloe and her friends, when they work together to free an innocent ghost?