Sigma Force books in order A series by James Rollins
The Sigma Force series by James Rollins has 7 books, from Map of Bones (2005) to Crucible (2019). Read it in order, starting with Map of Bones.
Reading order: 2 Map of Bones (2005) · 3 Black Order (2006) · 6 The Doomsday Key (2009) · 9 The Eye of God (2013) · 10 The 6th Extinction (2014) · 11 The Bone Labyrinth (2015) · 14 Crucible (2019)
Updated September 2026
All 7 Sigma Force books in order
- 2.
Map of Bones (2005)
- 3.
Black Order (2006)
- 6.
The Doomsday Key (2009)
- 9.
The Eye of God (2013)
- 10.
The 6th Extinction (2014)
- 11.
The Bone Labyrinth (2015)
- 14.
Crucible (2019)
Sigma Force FAQ
- How many Sigma Force books are there?
- There are 7 Sigma Force books, as of September 2026.
- What order should I read the Sigma Force books in?
- In publication order, starting with Map of Bones (2005): 2 Map of Bones (2005) · 3 Black Order (2006) · 6 The Doomsday Key (2009) · 9 The Eye of God (2013) · 10 The 6th Extinction (2014) · 11 The Bone Labyrinth (2015) · … all 7 below.
- What is the first Sigma Force book?
- Map of Bones (2005).
- What is the latest Sigma Force book?
- Crucible (2019).
- Is the Sigma Force series finished?
- There have been no new Sigma Force books since 2019.
Sources: series order and dates from Wikidata and Open Library. Last updated September 2026.