Persephone Snow - Siren Ascendant, imprisoned for six months in a literal hell on earthThe Cardinal - Persephone's absent captor, his whereabouts unknownMetis - A fellow captive, his mysterious abilities inhibited by a technomagical collarOn her own for the first time in her life, Persephone must free herself from the Cardinal's clutches, harness her newfound abilities, unravel the truth from a web of lies, and fight her way back to the man she loves.