The I Spy series of books has been loved and enjoyed by families for over 25 years. This I Spy Mystery 100-piece jigsaw puzzle features the unique and creative imagery from the best selling book, as well as activity cards, which challenge players to find the hidden images and add another dimension of a game to an already fantastic puzzle experience. 24 activity cards feature different items to find in the completed puzzle image, allowing for individual discovery or challenging game play with repeatability.