Order of Sigma Force Books
Sigma Force is a series of action-adventure/thriller novels by American novelist James Rollins. The SIGMA Force is a fictional division of the United States DARPA program. Its purpose is to investigate and to secure sensitive information that could be a threat to the country. Painter Crowe is the lead agent of the force, with a keen analytical mind that can see beyond the obvious facts.
The series began in 2004 with Sandstorm and has continued at the rate of one new book per year ever since. Currently, the Sigma Force series consists of seven novels with an eighth on the way. Below is the order in which James Rollins’ Sigma Force books were originally published:
Publication Order of Sigma Force Books
| Sandstorm | (2004) |    |
| Map of Bones | (2005) | |
| Black Order | (2006) | |
| The Judas Strain | (2007) | |
| The Last Oracle | (2008) | |
| The Doomsday Key | (2009) | |
| The Devil Colony | (2010) | |
| The Skeleton Key | (2011) | |
| Bloodline | (2012) | |
| Tracker | (2012) | |
| The Eye of God | (2013) | |
| The 6th Extinction | (2014) | |
| The Midnight Watch | (2015) | |
| The Bone Labyrinth | (2015) | |
| The Seventh Plague | (2016) | |
| The Demon Crown | (2017) | |
| Crucible | (2018) | |
| The Last Odyssey | (2020) | |
| Kingdom of Bones | (2021) | |
Note: The Tucker Wayne series is co-authored with Grant Blackwood.
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this list does not include “the Alter of Eden” which was published in 2010 so it comes after “the Doomsday Key” and before “The Devil Colony”.
Hi,
On James Rollins website these are the books in order. Although Tracker and Skeleton Key are under Sigma Force they are considered part of two short stories that introduce two new characters. Tracker is a short story that introduces Tucker Wayne and Kane for the first time. (See Kill Switch) which is the first book in that series. So enought prattling here are the books in order according to Mr. Rollins himself:
1. Sandstorm
2. Map of Bones
3. Black Order
4. Judas Strain
5. Last Oracle
6. Doomsday Key
6.5. Skeleton key
7. Devil Colony
7.5 Tracker
8. Bloodline
9. Eye of God
10. Sixth Extinction
I also recommend his other stand alone novels!
Happy Reading!!
When is #12 due out???
“Tracker” is an ebook, not really considered part of the Sigma Series.