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) |
  
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| Map of Bones | (2005) |
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| Black Order | (2006) |
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| Kowalski's in Love (Short Story) | (2006) |
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| The Judas Strain | (2007) |
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| The Last Oracle | (2008) |
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| The Doomsday Key | (2009) |
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| The Skeleton Key (Short Story) | (2011) |
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| The Devil Colony | (2011) |
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| Tracker (Short Story) | (2012) |
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| Bloodline | (2012) |
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| The Eye of God | (2013) |
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| Sixth Extinction | (2014) |
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| The Midnight Watch (Short Story) | (2015) |
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| The Bone Labyrinth | (2015) |
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| Crash and Burn (Short Story) | (2016) |
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| The Seventh Plague | (2016) |
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| Ghost Ship | (2017) |
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| The Demon Crown | (2017) |
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Note: The Tucker Wayne series is co-authored with Grant Blackwood.
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