You can crack codes uncover hidden clues reveal secret messages and be a super sleuth with this deluxe kit melissa ampamp doug secret decoder deluxe activity set on the go features 3 unique activity books secret decoder seek ampamp find and secret message 2 magic reveal sticker sheets 2 decoder wheels 2 colour change markers an invisible ink marker and a seek ampamp find lens crack the codes and complete the puzzles to solve dozens of mini mysteries dimensions 6q