by Rick Riordan
Part of The Heroes of Olympus, book 4
First published 2013
Percy Jackson and Annabeth have fallen into Tartarus, the deepest pit of the Underworld. Every step through this deadly realm brings new dangers as bloodthirsty monsters hunt them relentlessly. Their only hope lies in reaching the Doors of Death, but even more creatures wait there to destroy them. Above ground, their friends aboard the Argo II face an impossible decision. Hazel and the remaining demigods must choose whether to prevent an all-out war between Greek and Roman camps or abandon everything to save Percy and Annabeth. Both paths carry devastating consequences. Time runs short as the fate of the mortal world hangs in the balance. If Percy and Annabeth fail in their quest through the Underworld, hell will literally break loose on Earth. The crew must navigate their hardest choice yet, knowing that in the realm of evil, no one escapes unscathed.
Genres: fiction, adventure, fantasy, young-adult
Vibes: dark, emotional, fast-paced, suspenseful
Tropes: chosen-one, enemies-to-lovers, found-family
Setting: Tartarus, Underworld, Doors of Death
Period: modern-day
597 pages · Paperback · Puffin
Content warnings: violence