The scratch of the match, the whiff of sulphur, the long moment of suspense as the candle tips, and then the gasp at the almost-but-not-quite bearable moment when the wax meets the skin...knowing that there's more to come. Heat and cold offer almost infinite possibilities for the devious sensualist, and Spectrum, a scientist as well as a personal devotee of the art, has spent many years studying the ways to make temperature play safe as well as, well, hot.