Book 10 has arrived! At long last, The 39 Clues comes to a gripping finale with Margaret Peterson Haddix’s Into the Gauntlet! Having had the great privilege of writing two books in this series, I can honestly say that the final book is not only awesome but even threw me some surprises!
On Book 10 publication date, August 31, 2010, all seven of us authors united to answer questions, live. And lo and behold, even more secrets were revealed! Watch the recorded event here.



