"The Kidd children--including twelve-year-old twins Rebecca and Bickford--follow mysterious clues that take them from China to Germany, in the hopes of finding their missing father and the treasure that will finally free their kidnapped mother"--
- ISBN10 0316284807
- ISBN13 9780316284806
- Publish Date 14 September 2015 (first published 10 September 2015)
- Publish Status Active
- Publish Country US
- Imprint Little, Brown & Company
- Format Hardcover
- Pages 448
- Language English