These activity books let kids play spy games and solve mysteries with magic ink, red-lens technology, or a secret decoder wheel! The bundle includes: the Secret Decoder Game Book, with 18 pages of codes to crack and whodunits to solve; The Case of the Slippery Flippers (18 pages) , with mazes, seek-and-find pictures, puzzles, and word scrambles to solve to help Gary Gumshoe follow the clues and solve an important case; and The Case of the Runaway Ruby, with 18 pages of challenges to help Gary Gumshoe find Madame Mahvelous’s missing ruby. Everything stores neatly within the tab-close covers--perfect for spies on the go.