Sigma Force Series

18 primary works • 27 total works

Book 1

Sandstorm (Sigma Force, #1)
Sandstorm (Sigma Force, #1) James Rollins
3.96 avg. rating · 53784 Ratings

Book 2

Map of Bones (Sigma Force, #2)
Map of Bones (Sigma Force, #2) James Rollins
4.08 avg. rating · 62651 Ratings

Book 2.5

Kowalski's in Love (Sigma Force, #2.5)
Kowalski's in Love (Sigma Force, #2.5) James Rollins
4.03 avg. rating · 1556 Ratings

Book 3

Black Order (Sigma Force, #3)
Black Order (Sigma Force, #3) James Rollins
4.16 avg. rating · 36894 Ratings

Book 4

The Judas Strain (Sigma Force, #4)
The Judas Strain (Sigma Force, #4) James Rollins
4.17 avg. rating · 34018 Ratings

Book 5

The Last Oracle (Sigma Force, #5)
The Last Oracle (Sigma Force, #5) James Rollins
4.17 avg. rating · 34773 Ratings

Book 6

The Doomsday Key (Sigma Force, #6)
The Doomsday Key (Sigma Force, #6) James Rollins
4.18 avg. rating · 31212 Ratings

Book 6.5

The Skeleton Key (Sigma Force, #6.5)
The Skeleton Key (Sigma Force, #6.5) James Rollins
4.14 avg. rating · 8696 Ratings

Book 7

The Devil Colony (Sigma Force, #7)
The Devil Colony (Sigma Force, #7) James Rollins
4.19 avg. rating · 27844 Ratings

Book 7.5

Tracker (Sigma Force, #7.5)
Tracker (Sigma Force, #7.5) James Rollins
4.11 avg. rating · 5991 Ratings

Book 8

Bloodline (Sigma Force, #8)
Bloodline (Sigma Force, #8) James Rollins
4.25 avg. rating · 24388 Ratings

Book 9

The Eye of God (Sigma Force, #9)
The Eye of God (Sigma Force, #9) James Rollins
4.13 avg. rating · 21317 Ratings

Book 9.5

The Devil's Bones: Cotton Malone vs. Gray Pierce
The Devil's Bones: Cotton Malone vs. Gray Pierce Steve Berry
3.91 avg. rating · 1202 Ratings

Book 10

The 6th Extinction (Sigma Force, #10)
The 6th Extinction (Sigma Force, #10) James Rollins
4.09 avg. rating · 19016 Ratings

Book 10.5

The Midnight Watch (Sigma Force, #10.5)
The Midnight Watch (Sigma Force, #10.5) James Rollins
3.98 avg. rating · 3848 Ratings

Book 11

The Bone Labyrinth (Sigma Force, #11)
The Bone Labyrinth (Sigma Force, #11) James Rollins
4.16 avg. rating · 16966 Ratings

Book 11.5

Crash and Burn (Sigma Force, #11.5)
Crash and Burn (Sigma Force, #11.5) James Rollins
3.98 avg. rating · 3087 Ratings

Book 12

The Seventh Plague (Sigma Force, #12)
The Seventh Plague (Sigma Force, #12) James Rollins
4.07 avg. rating · 14512 Ratings

Book 12.5

Ghost Ship (Sigma Force, #12.5)
Ghost Ship (Sigma Force, #12.5) James Rollins
4.03 avg. rating · 2648 Ratings

Book 13

The Demon Crown (Sigma Force, #13)
The Demon Crown (Sigma Force, #13) James Rollins
4.21 avg. rating · 12438 Ratings

Book 14

Crucible (Sigma Force, #14)
Crucible (Sigma Force, #14) James Rollins
4.2 avg. rating · 11575 Ratings

Book 15

The Last Odyssey (Sigma Force #15)
The Last Odyssey (Sigma Force #15) James Rollins
4.19 avg. rating · 11219 Ratings

Book 16

Kingdom of Bones (Sigma Force, #16)
Kingdom of Bones (Sigma Force, #16) James Rollins
4.2 avg. rating · 9148 Ratings

Book 17

Tides of Fire (Sigma Force, #17)
Tides of Fire (Sigma Force, #17) James Rollins
4.21 avg. rating · 7312 Ratings

Book 18

Arkangel (Sigma Force, #18)
Arkangel (Sigma Force, #18) James Rollins
4.23 avg. rating · 4475 Ratings

Book 2.5 6.5 7.5 9.5 10.5 11.5 12.5

Unrestricted Access: New and Classic Short Fiction
Unrestricted Access: New and Classic Short Fiction James Rollins
4.18 avg. rating · 1149 Ratings

Book 1-2, 4, 6

Sandstorm / Map of Bones / The Judas Strain / The Doomsday Key (Sigma Force #1-2, 4, 6)
Sandstorm / Map of Bones / The Judas Strain / The Doomsday Key (Sigma Force #1-2, 4, 6) James Rollins
4.6 avg. rating · 163 Ratings