IAN MARK is an author and monster hunter living in Northern Ireland with his family, two cats he likes and one cat he doesn't. With his partner, he has written adult thrillers under the pen name Ingrid Black. Ian spends many hours staring into space, trying to decide whether the best book ever written is Virginia Woolf's The Waves or Enid Blyton's Book Of Brownies. His own work, he thinks, sits somewhere between those two poles.