From the World of Percy Jackson The Sun and the Star By Rick Riordan, Mark Oshiro (2023)

In this thrilling adventure co-written by Rick Riordan and Mark Oshiro, demigods Nico di Angelo and Will Solace embark on a daring quest into the depths of Tartarus to rescue an old friend. As the son of Hades, Nico has faced numerous challenges, but with his boyfriend Will by his side, he's ready to confront whatever dangers lie ahead.

Haunted by a voice calling out from Tartarus, Nico is convinced it belongs to Bob, a reformed Titan left behind during a previous escape. Prophecies and dreams confirm Nico's suspicions, compelling him to embark on the perilous journey, with Will insisting on accompanying him. But can a being of light survive in the darkest depths of Tartarus?

As Nico and Will confront both internal and external demons, their relationship is tested like never before. With action-packed scenes and emotional depth, this standalone adventure showcases the strength and resilience of two beloved characters from the Percy Jackson saga.

For fans of Percy Jackson, this book is a must-read addition to the Nico di Angelo collection, offering a gripping tale of friendship, bravery, and sacrifice in the face of darkness.