The big company wanted volunteers to test their new virtual reality game. But what is the game really about? And will the players be able to escape from its power and the strange hold it has over them? This is a major new novel about fear and courage, about truth and unreality, by one of today's foremost children's authors. Gillian Cross won the Carnegie Medal for Wolf, and the Whitbread Children's Novel Award and the Smarties Award for The Great Elephant Chase.