The secrets are out! Explore the world of the Cahills with this brand-new card pack. Each pack contains 16 never-seen-before games cards, including rare and ultra-rare cards. Supercharge your hut for the 39 Clues with these highly-classified location, secrets and Cahill agents. The information is wider and the stakes areven higher. These cards are your key to finding the 39 Clues and winning incredible prizes. Don't delay - the race is on!