Sigma Force · Book 22

Kingdom of Bones

Published
1 January 2022
Pages
448
ISBN-13
9780062892997
Type
novel
Cover of Kingdom of Bones

About this book

The sixteenth Sigma Force novel, "Kingdom of Bones" (2022, 448 pages), continues James Rollins's late-series escalation toward genuinely world-ending stakes, with Gray Pierce's DARPA-backed team once again chasing a conspiracy where cutting-edge science collides with ancient mystery.

Key facts about Kingdom of Bones

James Rollins wrote Kingdom of Bones, a novel on our list. It has been out since 2022. The book has 448 pages.

We list 2 editions of this novel. Since each edition has its own ISBN, search for 9780062892997 to find the main one.

Kingdom of Bones is book 22 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

Kingdom of Bones is book 22 in the Sigma Force series. It follows The Last Odyssey. It is followed by Tides of Fire. 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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