In this fifth and final (I swear!) audio book in my saga of secrets, 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 vandalization, Cass and her friends Max-Ernest and Yo-Yoji go to work for the mummy exhibit's curator, only to be blamed when the mummy disappears. To clear their names--and, they hope, to discover the Secret--the trio must solve the case of the missing mummy themselves. In the midst of it all, there's still a Secret lurking. Will it finally be revealed? Why should I tell you that?! No matter what I do, no amount of warning seems to stick. You're still out there, reading and talking about the Secret, and now my life--and chocolate supply--is in the greatest danger yet! So please, with a cherry on top, I'm begging you! You have to stop this.