The light was split into prismatic shafts as it entered the kitchen – red to the cooker, yellow to the breakfast bar, green to the terrarium and so on. It didn’t bother Elizabeth that the red shaft was no where near the orange or the green several yards from the blue. Colours only ever went where she wanted them to go. Other people didn’t seem to realise a shaft of monochromatic light could be directed by will alone. “What about ultraviolet?” someone asked over tea and biscuits. Elizabeth just laughed. “Let’s just say I don’t have any vampire trouble,” she said.