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Book cover for Arkangel, a Sigma Force novel by James Rollins, featuring Russian architecture and red atmospheric imagery.

Arkangel by James Rollins — Sigma Force Book 18

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Book cover for Tides of Fire by James Rollins, featuring a burning cityscape in a crosshair sight.

Tides of Fire by James Rollins — Sigma Force Book 17

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Kingdom of Bones book cover by James Rollins, featuring a biohazard symbol on dark textured background.

Kingdom of Bones by James Rollins — Sigma Force Book 16

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Book cover for The Last Odyssey by James Rollins, featuring an ornate circular medallion on blue textured background.

The Last Odyssey by James Rollins — Sigma Force Book 15

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Book cover for Crucible by James Rollins, featuring a golden key overlaid on a red occult symbol design.

Crucible by James Rollins — Sigma Force Book 14

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The Demon Crown book cover by James Rollins, featuring a fiery phoenix symbol on black background.

The Demon Crown by James Rollins — Sigma Force Book 13

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The Seventh Plague book cover by James Rollins featuring Egyptian scarab beetle artwork and hieroglyphics.

The Seventh Plague by James Rollins — Sigma Force Book 12

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The Bone Labyrinth book cover by James Rollins, a Sigma Force novel and #1 New York Times bestseller.

The Bone Labyrinth by James Rollins — Sigma Force Book 11

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The Extinction book cover by James Rollins, a Sigma Force novel, featuring a fossilized skeleton in sand.

The 6th Extinction by James Rollins — Sigma Force Book 10

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Book cover for The Eye of God by James Rollins, a Sigma Force novel featuring a red wax seal.

The Eye of God by James Rollins — Sigma Force Book 9

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Book cover for Bloodline by James Rollins, a Sigma Force novel, featuring DNA helix imagery on black background.

Bloodline by James Rollins — Sigma Force Book 8

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The Devil Colony by James Rollins, a Sigma Force novel featuring the Jefferson Memorial on the cover.

The Devil Colony by James Rollins — Sigma Force Book 7

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Book cover for The Doomsday Key by James Rollins, New York Times bestselling author, featuring Stonehenge and the U.S. Capitol building.

The Doomsday Key by James Rollins — Sigma Force Book 6

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The Last Oracle by James Rollins, New York Times bestselling thriller novel with ancient Greek imagery and fire design elements.

The Last Oracle by James Rollins — Sigma Force Book 5

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The Judas Strain book cover by James Rollins, New York Times bestselling author.

The Judas Strain by James Rollins — Sigma Force Book 4

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Book cover for Black Order by James Rollins, New York Times bestseller and Sigma Force book 3.

Black Order by James Rollins — Sigma Force Book 3

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Map of Bones book cover by James Rollins featuring compass design and historical map imagery

Map of Bones by James Rollins — Sigma Force Book 2

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Sandstorm book cover by James Rollins, New York Times bestselling author, featuring ancient ruins and lightning against brown background.

Sandstorm by James Rollins — Sigma Force Book 1

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