Henry Carter Hull

Part of the spell has already been broken. The first stones have begun to crumble. In Artie Kingfisher's world, wizards named Merlin, fire-breathing dragons, and swords called Excalibur exist only in legends and lore-until the day his video game Otherworld springs to life. You are special, Arthur, Says the mysterious message in his game. In one week's time you will come to me at the it. Cryptic clues lead Artie to a strange place called the Invisible...

The thrilling, action-packed sequel to The Invisible Tower, which School Library Journal called "a surefire hit with the legions of Rick Riordan fans." Spending the summer fighting dragons, rescuing wizards, and leaping through portals into the Otherworld was just the start of Artie Kingfisher's quest to claim his throne as King Arthur reborn. Now, Artie and his sister, Kay, must gather a team of knights to recover the legendary Seven Swords-or face...