More Mr Mystery Invisible Ink
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Whether it's calming a 'Tempest in a Teapot' or stopping a jailbird breakout, More Mr. Mystery has 32 pages of cases to crack and crooks to catch! Includes classic Mr. Mystery games: Battleship, 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!'