Foyle fell. Sheffield turned on Bunny and battered him back across the office. Then he spat into his palm. It had been decided not to depend on drugs since drugs might not be available. Sheffield's salivary glands had been prepared to respond with an anaphylaxis secretion to the stimulus. He ripped open Foyle's sleeve, dug a nail deep into the hollow of Foyle's elbow and slashed. He pressed his spittle into the ragged cut and pinched the skin together.