The fourth book in the CAHILLS VS. VESPERS series, the follow up to the worldwide bestseller THE 39 CLUES.After pulling some spectacular heists, Amy and Dan have become two of Interpol's most wanted criminals. So when Vesper One orders them to steal the world's largest diamond, they know they're facing life in prison . . . or worse. But with the Cahill hostages still in peril, Amy and Dan have no choice but to launch a mission that leads them to an ancient city full of dangerous secrets. With a Vesper mole sabotaging the Madrigals from inside, Amy and Dan have to fulfill their enemy's request before it's too late. Vesper One has developed a taste for killing Cahills, and Amy and Dan aren't going to wait to see who's next.ReviewPraise for The 39 CluesFeatured on NBC's Today Show, Good Morning America, USA Today, The New York Times, NPR's Morning Edition, Associated Press "One blazing success." —The Huffington Post"An interactive mystery...it's more than just a reading adventure." —Boys' Life"This is a multi-media adventure where you also search for clues—in books, trading cards and online. Get searching!" —Girls' LifeAbout the AuthorRoland Smith first worked with animals at the Portland Zoo, and he has been involved in animal rescues and conservation work around the world for more than twenty years. He is the author of Jack's Run, Zach's Lie, Cryptid Hunters, Peak, and most recently Tentacles, his Scholastic debut. He is also the co-author of numerous picture books with his wife, Marie. Roland lives with Marie on a farm south of Portland, Oregon, and he enjoys writing, traveling, and visiting schools. You can find him online at www.rolandsmith.com.

The Cahills thought they were the most powerful family the world had ever known. They thought they were the only ones who knew about Gideon Cahill and his Clues. The Cahills were wrong. Powerful enemies - the Vespers - have been waiting in the shadows. Now it's their time to rise and the world will never be the same. In Vespers Rising, a brand new 39 Clues novel, bestselling authors Rick Riordan, Peter Lerangis, Gordon Korman and Jude Watson take on the hidden history of the Cahills and the Vespers, and the last, terrible legacy Grace Cahill leaves for Amy and Dan.