This whimsically serious kit will delight fledgling spies. Included is an invisible ink pen with a miniature black light to reveal cryptic messages. The text in the 60-page book, drawn from the expertise of the International Spy Museum, contains instructions on how to best utilize this covert device, as well as 28 blank notebook pages for use with the pen. This kit also includes a set of terminology cards, which provide the right lingo to help the reader sound like a real secret agent.