Minutes before she died Grace Cahill changed her will, leaving her decendants an impossible decision: "You have a choice - one million dollars or a clue."

Grace is the last matriarch of the Cahills, the world's most powerful family. Everyone from Marie Curie to Harry Houdini is related to the Cahills, yet the source of the family power is lost. 39 Clues hidden around the world will reveal the family's secret, but no one has been able to assemble them. Now the clues race is on, and young Amy and Dan must decide what's important: hunting clues or uncovering what REALLY happened to their parents.

About the Author

Rick Riordan is the #1 New York Times bestselling author of the Percy Jackson and the Olympians series for children and the Tres Navarre series for adults. His books have won many accolades including a mention on the 2005 New York Times Notable list for The Lightning Thief. Rick lives with his family in San Antonio, Texas.
Ethan Young was born and raised in NYC to Chinese immigrant parents. Young is best known for NANJING: The Burning City, winner of the 2016 Reuben Award for Best Graphic Novel, which was also nominated for both the Eisner and Harvey awards. His other works include The Battles of Bridget Lee, Space Bear, and Life Between Panels. In addition to his comic book work, Young is also a prolific freelance illustrator, and worked as a character designer on the FXX animated TV show, Major Lazer.

"About this title" may belong to another edition of this title.

Store Description

Founded in 2002, World of Books is a leading online destination for buying and selling both preloved and new books, committed to making sustainable reading accessible to all. With a mission to help people read more and waste less, World of Books offers a huge range of affordable, high-quality books ? giving both new and preloved titles a second life. The company also operates World of Books ? Sell Your Books, an easy-to-use platform that allows customers to trade in unwanted books for cash, helping to keep books in circulation while promoting sustainability. As a Certified B Corp, World of Books is driven by a vision to become the world?s largest and most sustainable dedicated online bookstore. The company measures its success through the positive environmental impact it creates, the value it provides to customers, and its ability to operate profitably while supporting its sustainable mission

Visit Seller's Storefront

Seller's business information

SBYB, Inc.
900 Knell Rd, Montgomery, IL, 60538, U.S.A.

Sale & Shipping Terms

Terms of Sale

We guarantee the condition of every book as it's described on the Abebooks web sites. If you're dissatisfied with your purchase (Incorrect Book/Not as Described/Damaged) or if the order hasn't arrived, you're eligible for a refund within 30 days of the estimated delivery date. If you've changed your mind about a book that you've ordered, please use the Ask bookseller a question link to contact us and we'll respond within 2 business days.

Shipping Terms

Shipping costs are based on books weighing 2.2 LB, or 1 KG. If your book order is heavy or oversized, we may contact you to let you know extra shipping is required.

Shipping rates within U.S.A.

Shipping rates within U.S.A.
Order quantity	4 to 12 business days	3 to 6 business days
First item	US$ 0.00	US$ 10.95

Delivery times are set by sellers and vary by carrier and location. Orders passing through Customs may face delays and buyers are responsible for any associated duties or fees. Sellers may contact you regarding additional charges to cover any increased costs to ship your items.