Be a super detective! Use your Invisible Ink 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.
Each book includes 48 pages of fun and a special pen.
― Out of 39 retailers, four named activity books from Lee Publications as their top-selling travel item in March 2010, reporting sales averaging 24 per month.
― Kristen Dolle, manager of Playthings Toy Shoppe in Louisville, Ky. told TDmonthly in late Spring 2011 that Magic pen books by Lee Publications were a best-selling travel toy.
— In an April 2012 survey about best selling travel toys, Joe Berardoni, owner of Pun's Toys in Bryn Mawr, Pa., told TDmonthly: "As a category, Lee Publication’s Yes & Know books continue to sell out during travel time due to their wide age range and low retail price."
— Want this? As of 05/06/2011, this product was available for purchase at Playthings Toy Shoppe.