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, this
title includes 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'!