Sigma Force Series

14 primary works • 22 total works
Sigma Force, an elite covert arm of the US Defense Department made up of former Special Forces officers trained as experts in various scientific fields:

Book 1

Sandstorm
3.95
· 36535 Ratings · 1592 Reviews ·
published 2004
· 76 editions
An inexplicable explosion rocks the antiquities c…
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Book 2

Map of Bones
4.06
· 50130 Ratings · 1428 Reviews ·
published 2005
· 72 editions
The bones lead to ancient mysteries and present-d…
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Book 3

Black Order
4.15
· 26998 Ratings · 978 Reviews ·
published 2006
· 76 editions
A sinister fire in a Copenhagen bookstore ignites…
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Book 4

The Judas Strain
4.16
· 24966 Ratings · 1100 Reviews ·
published 2007
· 64 editions
New York Times bestselling author James Rollins…
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Book 5

The Last Oracle
4.16
· 26234 Ratings · 798 Reviews ·
published 2008
· 49 editions
In Washington, D.C., a homeless man dies in Comma…
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Book 6

The Doomsday Key
4.16
· 23110 Ratings · 913 Reviews ·
published 2009
· 54 editions
James Rollins, the "New York Times" bestselling m…
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Book 6.5

The Skeleton Key
4.14
· 6406 Ratings · 189 Reviews ·
published 2011
· 7 editions

From New York Times bestselling author James Roll…

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Book 7

The Devil Colony
4.18
· 20069 Ratings · 1061 Reviews ·
published 2010
· 43 editions
Deep in the Rocky Mountains, a gruesome discovery…
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Book 7.5

Tracker
4.11
· 4218 Ratings · 267 Reviews ·
published 2012
· 13 editions
From New York Times bestselling author James Roll…
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Book 8

Bloodline
4.24
· 16730 Ratings · 1133 Reviews ·
published 2012
· 44 editions
New York Times bestselling author James Rollins…
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Book 9

The Eye of God
4.12
· 13774 Ratings · 1057 Reviews ·
published 2013
· 38 editions
The crash of a U.S. military research satellite i…
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Book 10

The 6th Extinction
4.05
· 11548 Ratings · 960 Reviews ·
published 2014
· 34 editions
In a masterful epic of timeless mystery and ripp…
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Book 10.5

The Midnight Watch
3.96
· 2211 Ratings · 141 Reviews ·
published 2015
· 5 editions
From New York Times bestselling author James Roll…
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Book 11

The Bone Labyrinth
4.12
· 9628 Ratings · 945 Reviews ·
published 2015
· 29 editions
A war is coming, a battle that will stretch from…
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Book 11.5

Crash and Burn
3.98
· 1511 Ratings · 96 Reviews ·
published 2016
· 8 editions

From #1 New York Times bestselling author James…

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Book 12

The Seventh Plague
4.01
· 7014 Ratings · 621 Reviews ·
published 2016
· 23 editions
If the biblical plagues of Egypt truly happened--…
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Book 12.5

Ghost Ship
4.02
· 915 Ratings · 52 Reviews ·
published 2017
· 3 editions
From  New York Times  bestselling author James Ro…
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Book 13

The Demon Crown
4.24
· 4470 Ratings · 464 Reviews ·
published 2017
· 15 editions
To save mankind’s future, the members of Sigma Fo…
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Book 14

Crucible
4.75
· 4 Ratings ·
expected publication 2019
· 6 editions
In the race to save one of their own, Sigma Force…
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Sigma Guide
4.20
· 337 Ratings · 11 Reviews ·
published 2012
· 1 edition
This has been a project that has been under wraps…
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Book 1-4

Sigma Force Novels 1
4.71
· 52 Ratings · 1 Reviews · 2 editions
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Kowalski's in Love
4.04
· 296 Ratings · 27 Reviews ·
published 2006
· 2 editions
Experience a heart-pumping and thrilling tale of…
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