You Have to Stop This (The Secret Series)

The finale of the series! A class trip to the local natural history museum turns dangerous, or perhaps deadly--and I don't mean in the bored-to-death way--when Cass accidentally breaks a finger off a priceless mummy. Forced to atone for this "crime" of vandalism, Cass and her friends Max-Ernest and Yo-Yoji go to work for the mummy exhibit's curator, only to be blamed when tragedy strikes. To clear their names--and, they hope, to discover the Secret--the trio must travel deep into a land of majestic pyramids, dusty tombs, mysterious hieroglyphs, and the walking dead. Egypt? Or somewhere much stranger . . .