
In the race to save one of their own, Sigma Force must wrestle with the deepest spiritual mysteries of mankind in this mind-expanding adventure from the #1 New York Times bestselling author, told with his trademark blend of cutting edge science, historical mystery, and pulse-pounding action.
Arriving home on Christmas Eve, Commander Gray Pierce discovers his house ransacked, his pregnant lover missing, and his best friend’s wife, Kat, unconscious on the kitchen floor. With no shred of evidence to follow, his one hope to find the woman he loves and his unborn child is Kat, the only witness to what happened. But the injured woman is in a semi-comatose state and cannot speak—until a brilliant neurologist offers a radical approach to “unlock” her mind long enough to ask a few questions.
What Pierce learns from Kat sets Sigma Force on a frantic quest for answers that are connected to mysteries reaching back to the Spanish Inquisition and to one of the most reviled and blood-soaked books in human history—a Medieval text known as the Malleus Maleficarum, the Hammer of Witches. What they uncover hidden deep in the past will reveal a frightening truth in the present and a future on the brink of annihilation, and force them to confront the ultimate question: What does it mean to have a soul?
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Critical Acclaim
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“[Crucible] is a gripping story about science’s future that is rooted in history…. As usual, Rollins knows about strong storytelling.”
— South Florida Sun Sentinel (Reader Review) -
“One of his most exciting and most terrifying books to date….Rollins has truly secured his claim as heir to the best of Michael Crichton..”
—Booklist (*starred* review)— Book list (Reader Review) -
"[Crucible] is a wild ride...a rollercoaster of raucous events...from a technothriller to a medical suspense story to a shoot-'em-up adventure..."
— St. Louis Post-Dispatch (Reader Review) -
“Superb and scintillating…Rollins shades Crucible with equal measures of science and speculation, mixed in typically brilliant fashion and propelling him past the likes of Wilbur Smith and Alistair MacLean to claim the mantle of the greatest action-adventure writer of this or any generation.”
— Providence Journal (Reader Review) -
“With his latest Sigma Force adventure, James Rollins shows yet again why he’s the heir apparent to the throne previously held by Michael Crichton . . . Crucible is a riveting thriller that’ll stay with readers for a very long time.”
— TheRealBookSpy (Reader Review)
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FAQ
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Q. CRUCIBLE is the 14TH Sigma Force novel. Can you tell us a little about the heroes of this series?A. Sigma Force is a team of former special forces soldiers who have been drummed out of the service for ... Read MoreA:
Sigma Force is a team of former special forces soldiers who have been drummed out of the service for various reasons. But because of special aptitudes and abilities, they’ve been recruited in secret by DARPA—the Defense Department’s research-and-development agency—and retrained in various scientific disciplines to act as field agents for DARPA. Their mission is to protect the globe against various emerging threats. Basically, they’re scientists with guns.
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Q. What’s this latest Sigma thriller about?A. It starts when the hero of my books, Commander Gray Pierce, arrives home on Christmas Eve to find hi ... Read MoreA:
It starts when the hero of my books, Commander Gray Pierce, arrives home on Christmas Eve to find his house ransacked, his pregnant lover missing, and his best friend’s two young daughters vanished into the night. The only witness to this brutal attack is his friend’s wife, Kat, who is found beaten, bleeding, and comatose on the kitchen floor. This attack—along with the fiery deaths of a group of female scientists in Portugal—exposes a horrifying danger, a threat that looms ahead of us in real life. Stephen Hawking once described this coming threat as the “worst event in the history of civilization.” Elon Musk fears it will lead to World War III. Even Russian president Vladimir Putin has said that whoever controls this event will control the world. That event is the creation of the first human-like artificial intelligence. As this momentous achievement draws near, a global hunt begins for a young student on the run with a technology capable of unleashing a demon like no other. To stop this from happening and save their loved ones, Sigma Force must solve a mystery tracing back to the Spanish Inquisition and confront the ultimate question facing humanity: What does it mean to have a soul?
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Q. In your past novels, you’ve folded intriguing bits of history into your stories. In CRUCIBLE, you deal with the persecution of witches, highlighting an ancient text described as the “most blood-soaked book in human history.” What is this infamous book?A. Everyone knows about the famous Salem Witch Trials, where twenty people—fourteen of them women—w ... Read MoreA:
Everyone knows about the famous Salem Witch Trials, where twenty people—fourteen of them women—were put to death for the practice of witchcraft. But these deaths were only the final spasm of mass hysteria that had already swept Europe. There, persecutions ran for nearly three centuries, and all told, over sixty thousand “witches” were burned, hung, or drowned.
All of this bloodshed and death can be attributed to the publication of a single book in 1487, a witch-hunter’s manual called the Malleus Maleficarum—or The Hammer of Witches. Written by a German Catholic priest and mass produced by the newly invented printing press, copies quickly spread across Europe and over to the Americas. It grew to become the instructive “bible” for prosecutors to identify, torture, and execute witches. Many scholars deem it one of the most blood- soaked books in history, even comparing it to Mein Kampf, as it led to over sixty thousand deaths, most of them women.
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Q. But you also reveal that the relationship between witches and the Catholic Church was not as straightforward as it might appear. You tell about a Catholic patron saint—a patron saint of witches. That seems like such a contradiction. Is there really such a person?A. There is indeed. Her name was Saint Columba and a cult grew around her in northern Spain during the ... Read MoreA:
There is indeed. Her name was Saint Columba and a cult grew around her in northern Spain during the Middle Ages. According to legend, Columba was a witch from the ninth century, who met the spirit of Christ on the road. He told her she could not enter Heaven unless she converted to Christianity, so she did—but she remained a witch. She was eventually martyred and beheaded for her faith and became known as the “patron saint of witches.” To this day, she acts as a protector for witches, interceding on the behalf of good witches, while fighting against those who would corrupt such craft for evil purposes.
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Q. Likewise, during the bloody time of the Spanish Inquisition, you shine a light on one of the inquisitors who became known as the Witches’ Advocate. Who was he?A. His name was Alonso de Salazar Frías. He earned the name “The Witches’ Advocate” due to his ... Read MoreA:
His name was Alonso de Salazar Frías. He earned the name “The Witches’ Advocate” due to his belief that most, if not all, accusations of witchcraft during the time of the Spanish Inquisition were mere delusions or false testimony drawn from torture. He saved countless lives with his defense of witches. In fact, I was surprised to learn that because of his persuasive arguments, the Spanish Inquisition was one of the first organizations in Europe to outlaw the burning of witches.
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Q. CRUCIBLE also reveals that this persecution of women continues to this day, a topic that is very much in the news of late.A. Back during the witch trials, many of the women accused of witchcraft were healers who used their lo ... Read MoreA:
Back during the witch trials, many of the women accused of witchcraft were healers who used their local lore of plants and herbs to heal the sick. Or they were simply educated women who were curious and who dared to question the natural world. In other words, they were early scientists and naturalists—which was considered to be the sole domain of men. Yet, even today, women in the sciences find themselves enduring discrimination because of their gender: earning less pay, being passed over for promotions, being sexually harassed. Even their work is considered to be less important. Take for example, Dr. Donna Strickland from Canada, who won the Nobel Prize this year for physics. She was only the third woman in 117 years to be given this award. So, clearly in such a male-dominated field—in a forum considered to be enlightened and educated—women are still being persecuted for daring to question the world around them.
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Q. CRUCIBLE deals with witches. I understand you live in a haunted house. Is that true?A. Well, I just moved into a new house that dates back to 1936. Now I’m not that superstitious, but a ... Read MoreA:
Well, I just moved into a new house that dates back to 1936. Now I’m not that superstitious, but after moving in, I had weird feelings at times: strange cold spots, odd sulfurous smells. I thought to myself, “Cool, this place is haunted.” So I asked the realtor: “Does this house have any history of being haunted?” Her answer, shocking enough: “Have you seen THE ghost?” I was like “No, tell me more.” I expected some grisly tale of death, of families fleeing in the night. Instead she says, “A prior owner had the home inspected by a Fengshui expert who judged the home to be indeed haunted--by the ghost of a raccoon.” Hmm, I thought “That sounds about right for a former veterinarian turned writer.” So to appease this ghost, I now leave my kitchen garbage can open all night. Ghosts gotta eat, too.
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Q. CRUCIBLE also tackles the threat of modern witchcraft. What do you mean by that?A. Arthur C. Clarke once wrote that “Any sufficiently advanced technology is indistinguishable from m ... Read MoreA:
Arthur C. Clarke once wrote that “Any sufficiently advanced technology is indistinguishable from magic.” You only have to pick up your iPhone to appreciate this statement. If you took your phone a few decades into the past, it would seem miraculous to people back then. Likewise, in my novel, I shine a light into what’s currently transpiring in computer labs around the world, some of it quite
astounding, especially when it comes to the research into artificial intelligence. We’re much farther along this path to a true human-like intelligence than most people realize. -
Q. How soon might we reach that point?A. A recent poll of computer experts revealed that 42% of them believe this creation will happen within ... Read MoreA:
A recent poll of computer experts revealed that 42% of them believe this creation will happen within the decade, with half of those claiming within five years. And a handful believe we’ve already reached that point. Take for example AlphaGO—Google’s DeepMind AI player. It beat the world’s champion at the Chinese game of Go, a game that is trillions upon trillions of times more complex than chess. No one expected any computer to beat a human at Go for at least another decade. Yet, it took the company only months to train AlphaGo to accomplish this. Then more recently, Google built this program’s big brother, AlphaGoZero. This new program taught itself this game, all on its own, and in only three days, became the world champion, beating even its original version in a hundred out of a hundred games. It did this by developing strategies that no human had come up with after thousands of years of play. And there are even stronger programs on the horizon. So be afraid, be very afraid.
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Q. But why is the creation of a self-aware AI such a crisis? Why did Stephen Hawking describe it as the “worst event in the history of civilization”?A. It’s because the first human-like intelligence will not be idle. Instead, it will prove to be very ... Read MoreA:
It’s because the first human-like intelligence will not be idle. Instead, it will prove to be very busy. It will quickly—in weeks, days, maybe even hours—evolve into an incomprehensible superintelligence, a creation far superior to us, one that will likely have little use for humans. When that occurs, there is no way of predicting if this new superintelligence will be a benevolent god or a cold, destructive devil.
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Q. You also claim in the foreword to your novel that those who read your book risk dooming themselves forever? Is that true?A. Yes. Buried in the heart of the novel is a curse—a curse not cast by any witch but from a danger i ... Read MoreA:
Yes. Buried in the heart of the novel is a curse—a curse not cast by any witch but from a danger inherent in the knowledge found within these pages. Once you read this book, you may inadvertently be dooming yourself for all eternity. So read at your own risk.
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Q. Speaking of reading, this is the 14th novel in this exciting Sigma Force series. Does a new reader have to have read the earlier books?A. Not at all. I tailor each story so a new reader could jump into the series at any point. In fact, on ... Read MoreA:
Not at all. I tailor each story so a new reader could jump into the series at any point. In fact, only a small fraction of my readership have read my series in order. So anyone interested in this unique set of heroes and the troubles they face, CRUCIBLE is a perfect place to jump on in.
Media
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Crucible Trailer

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Amazon
Amazon, a Fortune 500 company based in Seattle, Washington, is the global leader in e-commerce. Since Jeff Bezos started...More InfoAmazon, a Fortune 500 company based in Seattle, Washington, is the global leader in e-commerce. Since Jeff Bezos started Amazon in 1995, we have significantly expanded our product offerings, international sites, and worldwide network of fulfillment and customer service centers. Today, Amazon offers everything from books and electronics to tennis rackets and diamond jewelry. We operate sites in Canada, China, France, Germany, Italy, Japan, Spain and United Kingdom and maintain dozens of fulfillment centers around the world which encompass more than 26 million square feet. -
Kindle
Amazon, a Fortune 500 company based in Seattle, Washington, is the global leader in e-commerce. Since Jeff Bezos started...More InfoAmazon, a Fortune 500 company based in Seattle, Washington, is the global leader in e-commerce. Since Jeff Bezos started Amazon in 1995, we have significantly expanded our product offerings, international sites, and worldwide network of fulfillment and customer service centers. Today, Amazon offers everything from books and electronics to tennis rackets and diamond jewelry. We operate sites in Canada, China, France, Germany, Italy, Japan, Spain and United Kingdom and maintain dozens of fulfillment centers around the world which encompass more than 26 million square feet. -
Barnes & Noble
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Nook
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Books-A-Million
Founded in 1917 as a street corner newsstand in Florence, Alabama, Books-A-Million, Inc. has grown to become the premier...More InfoFounded in 1917 as a street corner newsstand in Florence, Alabama, Books-A-Million, Inc. has grown to become the premier book retailing chain in the Southeastern United States, and the second largest book retailer in the nation. Based in Birmingham, Alabama, the company currently operates more than 260 stores in 32 states and the District of Columbia. In addition to its primary retail component, the corporation includes a book wholesale and distribution subsidiary, American Wholesale Book Company, an e-commerce division operating as BOOKSAMILLION.COM, and an internet development and services company, NetCentral, in Nashville, Tennessee. -
Google Play
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iBookstore
No matter how many books you stack on your bookshelves, you can carry them all with you. iBooks features over 2 million ...More InfoNo matter how many books you stack on your bookshelves, you can carry them all with you. iBooks features over 2 million titles in all.2 Browse biographies, mysteries, comedies, classics, and self-help books. Textbooks for history, literature, science, and other subjects. Your purchases will automatically appear on all your devices. And if you start reading a book on your iPad, you can pick it right back up on your iPhone. iCloud keeps your place, so you don’t have to. -
IndieBound
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Kobo
Inspired by a "Read Freely" philosophy and a passion for innovation, Kobo is one of the world's fastest-growing eReading...More InfoInspired by a "Read Freely" philosophy and a passion for innovation, Kobo is one of the world's fastest-growing eReading services. Read Freely stems from Kobo's belief that consumers should have the freedom to read any book, anytime, anyplace – and on any device. As a result, Kobo has attracted millions of readers from more than 170 countries and features one of the world's largest eReading catalogues with over 2.5 million eBook, newspaper and magazine titles. -
The Poisoned Pen
The Poisoned Pen, Founded in 1989, is an independent bookstore specializing in fiction. Discover current and classic wor...More InfoThe Poisoned Pen, Founded in 1989, is an independent bookstore specializing in fiction. Discover current and classic works of mystery, thrillers, historical and literary fiction, and literature of the American Southwest, much of it offered in Autographed First Editions and imports. -
HarperCollins
HarperCollins Publishers is one of the world's leading English-language publishers. Headquartered in New York, the compa...More InfoHarperCollins Publishers is one of the world's leading English-language publishers. Headquartered in New York, the company is a subsidiary of News Corp. The house of Mark Twain, the Brontë sisters, Thackeray, Dickens, John F. Kennedy, Martin Luther King Jr., Maurice Sendak, Shel Silverstein, and Margaret Wise Brown, HarperCollins was founded by brothers James and John Harper in New York City in 1817 as J. and J. Harper, later Harper & Brothers. In 1987, as Harper & Row, it was acquired by News Corporation. The worldwide book group was formed following News Corporation's 1990 acquisition of the British publisher William Collins & Sons. Founded in 1819, William Collins & Sons published a range of Bibles, atlases, dictionaries, and reissued classics, expanding over the years to include legendary authors such as H. G. Wells, Agatha Christie, J. R. R. Tolkien, and C. S. Lewis. Today, HarperCollins is a broad-based publisher with strengths in literary and commercial fiction, business books, children's books, cookbooks, narrative nonfiction, mystery, romance, reference, pop culture, design, health, wellness, and religious and spiritual books. Headquartered in New York, HarperCollins has publishing groups around the world in the US, UK, Canada, Australia, New Zealand, and India. With nearly 200 years of history, HarperCollins has published some of the world's foremost authors, including winners of the Nobel Prize, the Pulitzer Prize, the National Book Award, the Newbery Medal, and the Caldecott Medal. HarperCollins is consistently at the forefront of innovation, using digital technology to create unique reading experiences and expand the reach of its authors. -
HarperCollins [International]
The HarperCollins International Sales group is dedicated to bringing HarperCollins U.S. books to readers all over the wo...More InfoThe HarperCollins International Sales group is dedicated to bringing HarperCollins U.S. books to readers all over the world. Through a team of sales representatives and a marketing/publicity team, we sell and promote our English language titles globally, both in print and e-book formats.