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Sigma Force · Book 6

The Last Oracle

by James Rollins
Published
24 June 2008
Pages
441
ISBN-13
9780061691027
Type
novel
Buy on Amazon All Sigma Force books in order
Cover of The Last Oracle

About this book

Published in June 2008 at 441 pages, "The Last Oracle" is the fifth Sigma Force novel, sending Gray Pierce's cross-trained team of former special-forces scientists after another conspiracy where cutting-edge research collides with ancient legend, the recurring engine James Rollins built the series around.

Key facts about The Last Oracle

The Last Oracle is a novel by James Rollins. Readers have had it since 24 June 2008. It runs to 441 pages.

Our list holds 3 editions of The Last Oracle. Since each edition has its own ISBN, search for 9780061691027 to find the main one.

The Last Oracle is book 6 of 24 in the Sigma Force series. The series has 24 published books. However, the series starts with Sandstorm (2004). Crucible is the latest book in the series with a full release date, out on 22 January 2019.

Additionally, James Rollins writes Order of the Sanguines, Tucker Wayne and Moonfall as separate series. Those series sit on our thriller, supernatural thriller and fantasy shelves. Meanwhile, Trust No One is the latest published James Rollins book on file, from 24 February 2026. The next announced James Rollins release is due on 1 December 2026, so there is still more to come.

About James Rollins

James Rollins is the pen name of James Czajkowski, an American author and former veterinarian who left his practice to write adventure thrillers that blend cutting-edge science, historical mystery, and globe-trotting action. See every James Rollins book in order.

Its place in Sigma Force

The Last Oracle is book 6 in the Sigma Force series. It follows The Judas Strain. It is followed by The Doomsday Key. See the full Sigma Force reading order.

Sigma Force is a covert unit of the U.S. Defense Advanced Research Projects Agency (DARPA), staffed by former special-forces operatives cross-trained as scientists and sent to investigate threats where cutting-edge science and ancient mystery collide. Every novel pairs a real scientific or historical hook — CRISPR gene editing, quantum physics, lost expeditions, ancient plagues, cryptozoology, Norse and biblical lore — with a globe-spanning conspiracy, and James Rollins (a veterinarian by training) grounds even…

Editions

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