You have to stop this /
Pseudonymous Bosch ; illustrations by Gilbert Ford.
- New York : Little, Brown, 2011.
- 347 p. : ill., photos.
- (Secret series ; bk. 5) .
When a mummy disappears from the local history museum while Cass and her friends Max-Ernest and Yo-Yoji are there, they try to solve the case in order to clear their names and, they hope, discover the Secret they have been seeking.
9780316076272 (pbk.)
Adventure and adventurers --Fiction. Mummies --Fiction. Magic --Fiction. Immortality --Fiction.