The O Trilogy
2 books · Ages 10–18 · Young Adult
The O Trilogy is a 2-book series for ages 10–18 by Maurice Gee.
Where to Start

Start at the beginning: The Halfmen of O
This is a sequential series — each book builds on the last. Start with book 1.
2 books · Ages 10–18 · Young Adult
The O Trilogy is a 2-book series for ages 10–18 by Maurice Gee.

Start at the beginning: The Halfmen of O
This is a sequential series — each book builds on the last. Start with book 1.