- Tribesmen:
- The Drifter (2012)
- The Survivor (2014)
- The Assassin (2016)
- The Chronicles of Eidon
- The Mark of Aedyn (2009)
- Bloodright (2011)
- The King's Sword (2011)
- The Unconquered (2013)
- The War-Maker (2015)
- The Blood-Taker (2016)
- The Shadow Throne (2017)
- The Light-Bringer (2019)
- The Legends of the Raven
- Shadows of the Past (2017)
- Echoes of the Past (2017)
- Daughters of the Past (2018)
- The Last Queen of Osten Ard
- The Shadowed Crown (2023)
- The Shadow Series:
- The Shadowglass (2004)
- The Shadow Roads (2006)
- The Shadow Throne (2008)
Non-Fiction:
- Uncharted: A Journey Through the Heart of the Arctic (2015)
- A National Geographic Society grant recipient
- The Arctic Circle: Tales of Survival and Exploration in the Frozen North (2009)
- A National Geographic Society grant recipient
Juvenile Fiction:
- The Quest of the Six (2008)