“But strong light hurts you!” said Sacharissa. “It hurts vampires!” “Yes. It iss a bit of a bugger, but zere you go.” “And, er, that happens every time you take a picture, does it?” said William. “No, sometimes it iss a lot vorse.” “Worse?” “I sometimes crumble to dust. But zat which does not kill us makes us stronk.” “Stronk?” “Indeed!”