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?
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.