Seven brilliant teenagers battle increasingly bizarre and horrific dangers, trapped in a experimental underground research facility which is descending into chaos.
Winner of the Royal Mail Award. Short-listed for the Waterstone's Children's Book Prize, The Angus Book Award, the South Lanarkshire Book Award, The RED Award and the Stockport Book Prize.
'I raced thorough it… Great stuff' - Charlie Higson
(Young James Bond and The Enemy series)
'A high octane, action packed adventure story' -The Guardian
'I finished reading it and just said, wow' - Sunday Herald
'A plot that crackles' - Scotsman Newspaper
'A contemporary classic... in a class by itself' - In The Library Review
'Like a good Crichton Book… makes you sit back and think' - The Phoenix Book Company