More of Mr Mystery Invisible Ink Book
Each Book is shrink wrapped with a special pen. Size: 6" x 11"
Hours of Fun and Enjoyment
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 a jailbreak. One of our all-time best sellers! Collect all 4!