The Heroes of Olympus: The Mark of Athena (Book 3)

The Heroes of Olympus: The Mark of Athena (Book 3) by Rick Riordan

Greek meets Roman — and the sparks fly. In The Mark of Athena, the third book in Rick Riordan's Heroes of Olympus series, the seven demigods of the Great Prophecy are finally united aboard the Argo II. But peace between the Greek and Roman camps is fragile, and when things go catastrophically wrong, Annabeth is left with a solo quest: follow the Mark of Athena and retrieve a legendary statue that could unite — or destroy — both worlds.

What Happens in This Book

• 🛒 The seven heroes united — Percy, Annabeth, Jason, Piper, Leo, Hazel and Frank finally sail together on the Argo II
• ⚔️ Greek vs. Roman tensions explode — a shocking betrayal threatens to ignite a war between the two camps
• 🧵 Annabeth's solo quest — she must follow the Mark of Athena alone, facing her greatest fears in the dark
• 🔥 A cliffhanger ending for the ages — one of the most jaw-dropping finales in the entire Percy Jackson universe

About the Series

The Heroes of Olympus series is a five-book New York Times bestselling saga expanding the Percy Jackson universe into an epic clash of Greek and Roman mythology. The Mark of Athena is widely celebrated for its action, humour, and its legendary final pages.

Perfect for fans of: Percy Jackson and the Olympians, The Son of Neptune, Magnus Chase, and mythology-driven adventure fiction.

Recommended for ages 10–14 | Middle Grade & Teen Fantasy | Greek & Roman Mythology | Adventure