<i>'I'm not saying anything until you tell me some stuff. Like, who are you really?'</i><br/><br/><i>'I can't say,' said Skender.</i><br/><br/><i>'We're stuck, then,' said Kitty firmly. 'But I am sorry about spying on you. David's grandfather says he hasn't been kidnapped after all.'</i><br/><br/><i>'You were right, though, to think that he was in danger,' said Skender. 'I heard my parents talking. I don't think your friend is safe at all.'</i><br/><br/>It's the end of a long, hot summer, and mystery is the last thing on the minds of friends Kitty, David, Andrea and Martin. Then Andrea spots a strange van parked behind David's house, and a few days later, he disappears. Kitty is convinced he's been kidnapped - and that the secretive new boy has something to do with it - but David's family say he's safe. Only why won't they say where he's gone?<br/><br/>The friends don't know it, but they've stumbled on a sinister plot involving a criminal gang, a planned kidnap, and a school event that could go very, very wrong.<br/><br/>