Are the four Farthing sisters really descended from Persephone? This is what their aunt has always told them: that the women in their family can trace their lineage right back to the Goddess of the Dead. And maybe she's right, because the Farthing girls do have a ghost in the attic of their Manhattan brownstone —a kind and gentle ghost named Henry, who only they can see.

When one of the sisters falls in love with the ghost, and another banishes him to the Underworld, the sisters are faced with even bigger questions about who they are. If they really are related to Persephone, and they really are a bit magic, then perhaps it’s up to them to save Henry, to save the world, and to save each other.