It's amazing! The Hyperbrain is a super intelligent computer that works by accessing the human brain In the wrong hands though it could spell disaster The new Controller at the Artificial Intelligence Unit seems horribly familiar but Dinah & her friends know that the Demon Headmaster has been defeated Hasn't he? Great fun & just a little bit frightening Gillian Cross's Demon Headmaster books still hold readers under their hypnotic spell Fast-paced & full of adventure they're impossible to resist!