Blood is power source

There were two vampires in front of a door to an office. One of them was on the floor, thrashing and hissing in agony, clutching at its flabby belly. It was leaking blood all over the floor. Several dozen bullet holes - exit holes - in the door explained why. The injuries wouldn't kill the vamp, but they were painful and robbed it of the source of its supernatural power - the blood it had devoured. The other was crouched to the side of the doorway, as if debating with itself whether or not it should try to rush the door as its companion apparently had.


Changes Chapter 4, Page 31-32