The Demon Headmaster Takes Over
"Curiosity is the curse of the human brain!"
Suddenly, asking questions is dangerous - and finding out the answers seems impossible. What's going on?
Dinah and SPLAT investigate, and their search leads them to the Hyperbrain - a computer with more-than-human intelligence.
Who is the mysterious Controller in charge of it? He sounds horribly like the Demon Headmaster, but the Headmaster has vanished for ever ... or has he?
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