Publisher's Synopsis
A mysterious coded message. A search for a fabled perpetual motion machine. A horse ride from hell. And a night in the exclusive Billionaire's Club House of Puzzles. If Gerald thought his term in a Scottish Highlands school camp was going to be all snow-covered heather and tartan rugs he couldn't have been more wrong. With Professor McElderry in the clutches of Gerald's nemesis Sir Mason Green and a seemingly impossible task required to save his life, the stakes are high and the heat is on.
