Does everyone have a dark side? Is it possible that golden girl Emlyn, perfect student and great athlete, is the mastermind behind a crime? Emlyn has always been fascinated by Amaral-Re, a mummy kept in the museum in her small town. She has also had a secret desire to do something bad! So Emlyn agrees to take charge of a plot to steal the mummy: it seems like the perfect prank. She comes up with ways to get past museum security and sneak the mummy out, and even figures out what to with it once she's safely outside the museum. However, Emlyn soon finds out that her accomplices had other plans, and she finds herself using her wits to save the mummy, and herself. Cooney has created another exciting adventure story for her fans. The thrill of doing something "bad" is a familiar lure to teens, and readers will find themselves caught up in the excitement right along with Emlyn.