The students of Crystal School are confused: their friend Frankie has disappeared during the latest battle with their common enemy Andrew Milling! They can only wonder where he is and whether his life is in danger. But finally an encrypted message arrives from Frankie. Karag and his classmates discover that their friend has fallen into the enemy's lair and is forced to pretend to be a Milling supporter! How soon will he be exposed? And most importantly, how can he get free? The guys simply have to come up with a brilliant rescue plan! Otherwise, poor Frankie is in mortal danger... “Dynamic, exciting and witty!” – Jury of the literary prize Leipziger LesekompassBestseller according to the German magazine Spiegel. The publishing layout of the book is saved in PDF A4 format.