You can crack codes, uncover hidden clues, reveal secret messages, and be a super sleuth with this deluxe kit! Featuring 3 unique activity books (Secret Decoder, Seek & Find, and Secret Message), 2 magic-reveal sticker sheets, 2 decoder wheels, 2 color-change markers, an invisible-ink marker, and a seek & find lens. Crack the codes and complete the puzzles to solve dozens of mini mysteries!