Disney Publishing Worldwide will launch The Kane Chronicles, Book Two: The Throne of Fire with a 1.5 million-copy first printing on Tuesday, May 3, 2011. The Red Pyramid, the first book in the series, has already sold more than one million copies since its publication in May 2010. More than 20 million books are in print in the US across Riordan’s three young reader series from Disney-Hyperion Books: Percy Jackson & the Olympians, The Kane Chronicles, and The Heroes of Olympus. The books have been sold into more than 35 countries.
