The first, The Billionaire's Curse, deals with Gerald's great-aunt's death and legacy, plus a quest to find a killer and the answer to an ancient puzzle. The next ones take in a raft of locations and mysteries.
The House of Puzzles sees Gerald and friends attending a strict Scottish Highlands school and competing in the Triple Crown, a gruelling set of three tasks which nobody in the school's history has completed.
Gerald also has a midterm break assignment: travel to New York and spend the night in the Billionaires Club building to become a full member of that organisation.
Young readers who like action and mystery will love this one.
Ages 12+
- by Rene Nol.