Vespers Rising

The Cahills weren't the only family searching for the Clues. They had powerful rivals: the Vespers, an evil organization waiting in the shadows.

In a novel in four parts, bestselling authors Rick Riordan, Peter Lerangis, Gordon Korman, and Jude Watson reveal the hidden history of the Cahills and the Vespers. The book kicks off with Rick Riordan tracking Gideon Cahill, his nemesis Damien Vesper, and the truth about the awful fire that started it all. Peter Lerangis jumps to Madeleine Cahill, chased by Vesper agent to the snakepit court of Henry VII. Gordon Korman races off to Morocco on the eve of a WWII invasion, where thirteen–year–old Grace Cahill is frantically trying to stop a Vesper plot. And Jude Watson follows Amy and Dan Cahill to Boston, where they discover one last, terrible legacy from their grandmother.