Gareth Moore is the internationally bestselling author of a wide range of brain-training and puzzle books for both children and adults, including The Ordnance Survey Puzzle Book, The Whodunnit Puzzle Book, Anti-stress Puzzles, RHS Gardner's Quiz & Puzzle Book, Brain Games for Clever Kids®, Lateral Logic, and Extreme Mazes. His books have sold over a million copies in the UK alone and have sold in thirty-five different languages. He is also the creator of online brain-training site BrainedUp.com and runs the daily puzzle site PuzzleMix.com.

Laura Jayne Ayres is a puzzle writer and researcher. After studying Linguistics at the University of Cambridge, she worked as a playwright before joining Dr Gareth Moore's puzzle team. She has worked on: Hacked: The Cyber Crime Puzzle Book, The Great British Puzzle Book, The Perfect Crime Puzzle Book, The Nautical Puzzle Book, and The Ordnance Survey Kids' Adventure Book.