Dr Gareth Moore is the internationally bestselling author of a wide range of puzzle and brain-training books, with total sales in excess of 5 million copies worldwide. His books for adults include The Whodunnit Puzzle Book, Spydle, The Ordnance Survey Puzzle Book , The Mindfulness Puzzle Book , The Mammoth Book of New Sudoku , The Great British Puzzle Book and The Times Atlas of the World Puzzle Book , while his books for children include the million-selling Clever Kids series. He is also the creator of 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 H acked: 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 .