Mr. Mystery (Return of) Invisible Ink (Green Book)
OUT OF PRINT! VERY LIMITED SUPPLY!
These are the books you remember from your childhood road trips and vacations!
Be a super detective! Use your special pen to uncover the truth and solve the mysteries. Here are just some of the games you will find inside this book, decode the cryptograms, decipher Krazygrams, and nab the crook in jailbreak.
• special pen