KNYGA Gareth Moore Whodunnit Puzzle Book, 80 Cosy Crime Puzzles to Solve
KNYGA Gareth Moore Perfect Crime Puzzle Book, Over 90 Puzzling Cases to Solve
KNYGA Gareth Moore 5-Minute Brain Workout for Longevity, Puzzles to Boost Your Brain Power
KNYGA Gareth Moore Mensa's Most Difficult Logic Problems

