The Call Of The Wild

"At times like this, with his every nerve alight with the rush of pursuit, it was a challenge to cling to his humanity. Saliva flooded Sherlock’s mouth, and he was more aware of his teeth than usual as he acknowledged his body’s desire to bite. Logically, he knew that the creature at his mercy was a human suspect and not something that should be termed as prey, but a small, dark part of him cared little for the distinction."
(Warning for graphic case related violence)