Xena and Xander Holmes, an American brother and sister who are living in England, use clues from their ancestor Sherlock Holmes' casebook when they are asked by a classmate to find an ancient Egyptian artifact that has been missing for many years.
- ISBN10 0805080465
- ISBN13 9780805080469
- Publish Date 26 May 2010 (first published 27 April 2010)
- Publish Status Transferred
- Publish Country US
- Publisher Henry Holt & Company Inc
- Imprint Owl Books,U.S.
- Format Hardcover
- Pages 158
- Language English