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"What do you get when you mix Tintin, James Bond, and The Famous Five together? You get Richard Newsome's Billionaire series."Christchurch Kids Blog
"Filled with secret passageways and deadly booby traps, you'll be on the edge of your seat!"K-Zone
"A rollicking good yarn."Weekend Herald
"An irresistibly fun-tastic tale that's virtually guaranteed to keep youngsters reading, chuckling and desperately waiting for the next book in the series."Independent Weekly
"It has humour that is just off centre enough to appeal to children as well as a few pearls of wisdom thrown into the mix. Fans of the series will lap it up and those who haven't read the earlier books will no doubt want to go back and read the rest."OrangeDaleblog
"Plenty of plot twists to keep readers guessing and eager for Gerald's next adventure."Magpies
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 easy 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.
In this fifth book of the Billionaire Series, Gerald, Ruby Sam, and Felicity face their greatest challenge yet.