Everyone at school is playing the new computer game, Octopus Dare, but only Dinah is good enough to beat it. But she forgets who she is when she looks into the whirling eyes of the Octopus...What is happening, and how is the Demon Headmaster involved? And what will he do if he really does get into the Prime Minister's Brain? This is the second title in the best-selling series which inspired the top-rating TV series.