Purple is the best club ever! Everyone loves the mysterious DJ Pardoman . . . especially his cool, electronic mask. But just who is lurking behind the mask? When Dinah makes a shocking discovery she sets out to investigate. But will she and her friends be able to stop the Demon Headmaster in his most threatening plan yet?

Club Purple is the place to be! The mysterious DJ Pardoman is so cool, with his ever-changing electronic mask. So when a competition is announced to unmask the DJ, everyone wants to win and find out who he is. When Dinah makes a shocking discovery she decides to investigate further, but has she fallen into a trap? Little does Dinah realize that the Demon Headmaster is about to use her in his most threatening plan yet!

Great fun and just a little bit frightening, Gillian Cross's Demon Headmaster books still hold readers under their hypnotic spell. Fast-paced and full of adventure, they're impossible to resist!

The book kept me on the edge of my seat with lots of unexpected twists!

A fun read for conspiracy theorists aged nine and up!

Gillian Cross is one of the best children's novelists today and her stories of the Demon Headmaster are both fun and quite frightening.