The original invisible activity series, Mr Mystery, has RETURNED with even more fun. The much-loved format has been invigorated for a whole new generation ready for secret agent undercover spying and sleuthing with The Return of Mr Mystery!

With 32-pages of codes to crack and mysteries to solve, More Mr Mystery is the ultimate Mr Mystery follow-up title, including classic best-loved activities: Battleship, Line-Up, Hangman, Top Secret and Krazygrams! Best of all, the invisible ink pen makes this the perfect gift for super-sleuthers on the go for hours of working out 'whodunnit'!