'Utterly gripping - the best thriller of the Internet age I have ever read. It lures you into the seductive world of the chat-room, where nothing is quite what it seems, and the mundane shades chillingly into the sinister. There were times when I scarcely dared to turn the page.' -- Magnus Linklater 20080427 'A classic thriller of the highest quality -- complex, meticulously researched and skilfully told -- but it goes further, taking the genre into cyber-space and giving terror a whole new dimension. The murderous hacker enters unobserved into his victims' lives. Reality and virtual reality become confused. The protagonists criss-cross the globe by train and plane but the digital avenger is always one step ahead.