The Doomsday Key: A Sigma Force Novel

· Sigma Force Novels Book 6 · Harper Collins
4.5
135 reviews
Ebook
560
Pages
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About this ebook

In this electrifying adventure from James Rollins, the #1 New York Times bestselling author of the Sigma Force series, Commander Gray Pierce returns to solve a centuries-old secret, one coded in prophecies of doom.

At Princeton University, a famed geneticist dies inside a biohazard lab. In Rome, a Vatican archaeologist is found dead in St. Peters Basilica. In Africa, a US Senator’s son is slain outside a Red Cross camp. Three murders on three continents bear a horrifying connection: all the victims are marked by a Druidic pagan cross burned into their flesh.

The bizarre murders thrust Commander Gray Pierce and Sigma Force into a race against time to solve a riddle going back centuries, to a ghastly crime against humanity hidden within a cryptic medieval codex. The first piece of the puzzle is discovered inside a mummified corpse buried in an English peat bog-a gruesome secret that threatens America and the world.

Aided by two women from his past–one his ex-lover, the other his new partner–Gray must piece together the horrifying truth. But the revelations come at a high cost, and to save the future, Pierce will have to sacrifice one of the women at his side. That alone might not be enough, as the true path to salvation is revealed in a dark prophecy of doom.

Sigma Force confronts humankind’s greatest threat in an adventure that races from the Roman Coliseum to the icy peaks of Norway, from the ruins of medieval abbeys to the lost tombs of Celtic kings. The ultimate nightmare is locked within a talisman buried by a dead saint–an ancient artifact known as the Doomsday Key.

Ratings and reviews

4.5
135 reviews
Teresa Barrett
January 21, 2022
James Rollins Sigma Force series are my newest obsession for reading. While each so far have their own unique theme, the scientific and historic details make them great stories. The Doomsday Key is no exception. The history of Neolithic British Isles, and science behind the world's food supply are fascinating and eye opening, and combined with nonstop action of these Sigma Force novels, Rollins has written another edge of your seat thrill ride. The main characters continue to develop and I'm always rooting for them. Even the "villains", aren't always as they seem, making their characters that much more interesting. I'm already anxious to start the next in this series!
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Jason Nelms
February 6, 2013
I've read every book by this author written in order up to this one. Can't go wrong with this book or any other. Best author in my opinion. Bit of advice, if you haven't read any of the Sigma series before this one, start with Sandstorm and work you way to this one in order. You'll be missing great books, key running plot points and the chance to get to know these great characters. Can't wait to start the next chapter of the Sigma series!
11 people found this review helpful
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Ronnie Zamora
May 18, 2015
This is now the sixth book I've read by James Rollins and once again he does not disappoint... Full of action, along with interesting facts.
1 person found this review helpful
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About the author

James Rollins is the author of international thrillers that have been translated into more than forty languages. His Sigma series has been lauded as one of the “top crowd pleasers” (New York Times) and one of the “hottest summer reads” (People magazine). In each novel, acclaimed for its originality, Rollins unveils unseen worlds, scientific breakthroughs, and historical secrets—and he does it all at breakneck speed and with stunning insight. He lives in the Sierra Nevada.

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