Dr Gareth Moore (B.Sc (Hons) M.Phil Ph.D) is the internationally bestselling author of a wide range of brain-training and puzzle books for both children and adults, including Anti-stress Puzzles, Ultimate Dot to Dot, Brain Games for Clever Kids®, Lateral Logic, Extreme Mazes and The Ordinance Survey Puzzle Book. His books have sold over a million copies in the UK alone and have sold in 35 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. Books that she has worked on include Hacked: The Cyber Crime Puzzle Book, The Great British Puzzle Book, The Perfect Crime Puzzle Book, The Nautical Puzzle Book and The Ordinance Survey Kids' Adventure Book.