The O Trilogy

2 books · Ages 1018 · Young Adult

The O Trilogy is a 2-book series for ages 10–18 by Maurice Gee.

Where to Start

The Halfmen of O

Start at the beginning: The Halfmen of O

This is a sequential series — each book builds on the last. Start with book 1.

Reading Order

What This Series Covers

Fear & BraveryGood vs. EvilResilience & PerseveranceJustice & FairnessFantasy & MagicAdventure