The founder and director of a small museum in the suburbs of Atlanta, Richard Dixon, became the victim of a ritual murder. Everything points to this - the dagger with occult symbols with which he was stabbed, and the place where the body was found, and the strange note he made, perhaps a second before death. Just one name - Atreus. But what relation can this hero of ancient Greek myths have to murder? Museum curator Deborah Miller, Dixon's favorite student, begins her own investigation - and comes to an incredible conclusion: the mysterious criminal did not just kill her teacher , but also stole from the museum the greatest treasure of antiquity - a golden funeral mask... The police consider her version ridiculous. And then Deborah understands: she will have to look for the killer and his priceless trophy alone...