He took a sabbatical from his teaching career to write Spy High Series Two.
He says he has been influenced by Charles Dickens and George Orwell, but that Stan Lee, creator of many of Marvel Comics' super-heroes, is his biggest inspirational figure.
The series is published by Atom Books in the UK and Commonwealth and Little, Brown and Co. in the US.
They must defeat criminals and viruses, and possibly most importantly of all, they must accept the death of a teammate and trust the replacement.
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