Knockout Gas

While Harkat clambered to his feet and threw punches at the guard, I drew a fist back to let the officer have a bunch of fives in the face. Mr Crepsley stopped me. "Please," he said politely, getting to his feet and tapping the officer on the shoulder. "Let me."

The officer turned as though hypnotized. Mr Crepsley opened his mouth and breathed the special knockout gas of the vampires over him. One whiff of it and the officer's eyes were rolling in their sockets.

I caught him as he fell, and gently lowered him to the floor.

***

Cirque Du Freak: Killers of the Dawn, Chapter 7