The Demon Headmaster and the Prime Minister's Brain

Octopus-s-s-s-s!

Everyone at school is obsessed with the new computer game, Octopus Dare - but only Dinah is good enough to beat it. As it begins to take hold, she realises that the game is trying to control her. But why is it happening?

And how is the Demon Headmaster involved?

This is the second book about the Demon Headmaster.