When Zoe Faust sees the ghost of a murdered young woman, is it really a spirit-or a flesh and blood woman who stopped aging because she's a fellow alchemist?

Sixteen years ago, high school student Ridley Price discovered a secret she planned to reveal through a party game-but someone killed her first. The baffling crime was never solved. Zoe's friend Heather has always wondered: which of the seven guests at the party killed Ridley? When the newly-appeared ghost turns dangerous, threatening people they love, Zoe teams up with her gargoyle roommate Dorian to unmask the supposed specter.