Hercules is back. Every hero has their monsters. And Alexis is bound to hers: tied eternally, irrevocably to the Underworld's dark heirs in a marriage that has shaken the foundations of Olympus and everything she once believed. Reeling, she enlists in the Assembly of Death with her mentors, set on wreaking vengeance on her husbands and uncovering the truth behind her deadly powers. She will soon teach them all that a god can't be manacled. And a monster can't be caged.