Looking forward to seeing the mummy exhibit at their local museum, Mary-Kate and Ashley are astonished when the mummy is discovered missing, and the twins don their trenchcoat personas to solve another mystery.
- ISBN10 0613113845
- ISBN13 9780613113847
- Publish Date 1 December 1998
- Publish Status Out of Print
- Out of Print 6 April 2021
- Imprint Turtleback Books
- Edition Turtleback School & Library ed.
- Format Hardcover (Library Binding)
- Language English