A Nico di Angelo Adventure (Book 1)
As the son of Hades, Nico di Angelo has been through so much. But there is a ray of sunshine in his life - literally: his boyfriend, Will Solace, the son of Apollo. Now Nico is being plagued by a voice calling out to him from the lowest part of the Underworld. He thinks he knows who it is: a reformed Titan named Bob whom Percy and Annabeth had to leave behind when they escaped Hades's realm. Nico has to go on this quest, and of course Will insists on coming with. But can a being made of light survive in the darkest part of the world?