At fourteen, twins Liz and BJ are smart gamemakers whose high-tech computer games sell in millions. But when their game Night's Castle becomes infected with a virus they are in trouble with the police. They must grab enough time to re-enter the VR world of Night's Castle and see if they can source the virus - if not they are ruined. Set in a city of the future, this book is a vivid and tense exploration of the VR world.

There are 160 pages in this book. This book was published 1993 by O'Brien Press Ltd .

An authority on mythology and folklore, Michael Scott is one of Ireland's most successful authors. A master of fantasy, science fiction, horror, and folklore, he has been hailed by the Irish Times as "the King of Fantasy in these isles".