Top Secret Detective Kit- Hidden messgaes revealed! A just for fun kid's blacklight ink demonstration kit! The *Top Secret* Detective Kit includes a Top Secret Invisible Marker and a Top Secret Developer Marker, plus a handy dandy notebook for writing those very private notes in! Great fun for kids! Shipped directly from the manufacturer.--rush shipping not available. To check pricing or place your order online, click the *Continue* link. Information on how to place your order by fax or by telephone. Grades 2 and up. Available in a set of 4 or 8. Product Numbers: TS1332004 and TS1332008