Richard Myerscough -
BatBlood: The Devil's Claw - is the first book in the Bat Blood series. It is a novel about stem cell research that inadvertently contaminates a colony of bats. After the surviving members change into gargoyle like creatures, the medical researchers must suppress them at any cost. After a young girl is attacked and infected by the creatures blood, she too changes. As she is drawn into the bloody war between the creatures and the mercenaries hired to destroy them, she is forced to struggle and come to terms with who and what she is turning into.