From the World of Percy Jackson: The Sun and the Star

Demigods Nico di Angelo and Will Solace must endure the terrors of Tartarus to rescue an old friend in this thrilling adventure co-written by New York Times #1 best-selling author Rick Riordan and award-winning author Mark Oshiro. Percy Jackson fans,rejoice! Nico and Will have a book of their own! As the son of HadesNico di Angelo has been through so muchfrom the premature deaths of his mother and sisterto being outed against his willto losing his friend Jason during the trials of Apollo. But there is a ray of sunshine in his lifeΓÇöliterally: his boyfriendWill Solacethe son of Apollo. Together the two demigods can overcome any obstacle or foe. At leastthat’s been the case so far… Now Nico is being plagued by a voice calling out to him from Tartarusthe 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’s dreams and Rachel Dare’s latest prophecy leave little doubt in Nico’s mind that Bob is in some kind of trouble. Nico has to go on this questwhether Mr. D and Chiron like it or not. And of course Will insists on coming with. But can a being made of light survive in the darkest part of the world? and what does the prophecy mean that Nico will have to \