Bitter Fruit - Hound of Hades, #9

Breaking up is hell... The gods don't do anything by half-measures-including breakups. Persephone has decided she's done with Hades and wants NYC all to herself. and she's willing to play dirty to get it. Mal knows Hades's temple doesn't have the strength for war, or the leverage to negotiate better terms. But they do have Ciara-Marked of Persephone and Mal's oldest friend. She's working from the inside, and she promises her plan will get them through this alive. And it had better work.
Because if it doesn't, it will be up to Mal to figure out plan B. And unlike Ciara, Mal will have no problem sacrificing whoever and whatever gets in the way of her mission-including her own humanity.