The most dangerous secret in Amy and Dan's past is unveiled in Book 7 of the #1 New York Times bestselling series.JOIN ANYTIME TO PLAY FOR THE CHANCE TO WIN!It's no longer a game. The body count is rising. Shaken by recent events, Amy and Dan flee to an exotic land and trace the footsteps of their most formidable ancestor yet: a military leader of mythic proportions. Yet just as the siblings begin to master the art of ancient warfare, they confront a dangerous enemy that can't be felled with a sword: the truth. With the stakes higher than ever, Amy and Dan uncover a devastating secret that changes everything

Peter Lerangis is the author of The Sword Thief and The Viper’s Nest, Books 3 and 7 in the bestselling multi-media adventure series The 39 Clues. He has written more than 150 books for young readers in many different genres.He’s also a Broadway musical theater actor/singer, a marathon runner, and a father of two sons. He currently lives in New York City.