When a perfectly preserved "mummy" is discovered in the dusty basement of Boston's Crispin Museum and an archaeologist turns up missing, medical examiner Maura Isles and Boston homicide detective Jane Rizzoli have precious little time to derail the Archaeology Killer before he adds another chilling piece to his monstrous collection.Invited to witness the X-ray scanning of a mummy, medical examiner Maura Isles is shocked to discover that the mummy is actually a recent murder victim, and joins forces with Boston PD detective Jane Rizzoli in an investigation that uncovers other similar crimes.