The original invisible activity book, Mr Mystery, is BACK and invigorated for a whole new generation ready for secret agent undercover fun!
With 32-pages of codes to crack and mysteries to solve, Mr Mystery includes classic best-loved activities: Battleship, Jailbreak, Hangman, Top Secret and What Does Mr Mystery Like? Best of all, the invisible ink pen makes this the perfect gift for super-sleuthers on the go for hours of working out 'whodunnit'!
