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Content snapshot
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Violence
A lot
Tartarus depicted as extreme danger; combat with primordial monsters; deaths
Language
Some
Mild language; Riordan's middle-grade to YA register
Sexual Content
Barely any
Mild; Percy and Annabeth's relationship; Nico's arc involves a same-sex crush handled age-appropriately
Substance Use
None
No substance use
Emotional Intensity
A lot
Strong; what the people you love are capable of when they have no good options; the cost of survival in an environment designed to break you; Nico's self-discovery as one of the series' most praised moments
What this book is about
The fourth book in Riordan's Heroes of Olympus series, and the one readers remember: Percy and Annabeth spend the entire novel literally in Tartarus — the pit below the Underworld — while their friends race to open the Doors of Death from the other side. Riordan shows what it costs Percy and Annabeth to survive hell together. The novel also delivers one of the most celebrated coming-out moments in mainstream YA in Nico di Angelo's arc.
Notes for sensitive readers
Reader-flagged moments and themes that may affect your experience.
Nico di Angelo's same-sex attraction handled age-appropriately
Reader Verification
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More Romance books from the catalog.
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