Book #16
Kingdom of Bones: A Sigma Force Novel
Released On: Apr 19, 2022

It begins in Africa . . .

A United Nations relief team in a small village in the Congo makes an alarming discovery. An unknown force is leveling the evolutionary playing field. Men, women, and children have been reduced to a dull, catatonic state. The environment surrounding them—plants and animals—has grown more cunning and predatory, evolving at an exponential pace. The insidious phenomenon is spreading from a cursed site in the jungle — known to locals as the Kingdom of Bones —and sweeping across Africa, threatening the rest of the world.

What has made the biosphere run amok? Is it a natural event? Or more terrifyingly, did someone engineer it?

Commander Gray Pierce and Sigma Force are prepared for the extraordinary and have kept the world safe, vigilance for which they have paid a tragic personal price. Yet, even these brilliant and seasoned scientific warriors do not understand what is behind this frightening development—or know how to stop it. As they race to find answers, the members of Sigma quickly realize they have become the prey.

To head off global catastrophe, Sigma Force must risk their lives to uncover the shattering secret at the heart of the African continent—a truth that will illuminate who we are as a species and where we may be headed . . . sooner than we know.

Mother Nature—red in tooth and claw—is turning against humankind, propelling the entire world into the Kingdom of Bones.

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Critical Acclaim

  • "This one’s fast-moving fun.”

    Kirkus Reviews (Reader Review)
  • "Exhilarating...Fans of Clive Cussler and Michael Crichton won’t want to miss this one."

    Publisher’s Weekly *STARRED* review
  • "The Sigma Force novels are muscular, dynamic action-adventures. But this doesn’t mean they skimp on character: Rollins knows just when to slow things down and let us get to know the players. He’s very good at this sort of thing, and his fans will surely be lining up for this one."



  • Q. What’s Kingdom of Bones about?
    A. The story starts when out all hell breaks loose at United Nations relief camp in a small village in ... Read More
  • Q. The novel opens in the past, in the colonial Congo, in a chilling scene involving cannibals and a Black Presbyterian reverend, William Henry Sheppard. Is he a real person?
    A. He was—and someone who deserves great credit for exposing the atrocities committed against the ... Read More
  • Q. Reverend Sheppard isn’t the only figure from the past who plays a major role in the story. There is another figure tied to the legends of Africa: Prester John. Is he real, too?
    A. That’s certainly a good question. According to stories throughout the Middle Ages, there was a ... Read More
  • Q. Regarding those strange truths, Kingdom of Bones also deals with viruses. How much is true there and how did you go about your research during a pandemic?
    A. First, let me say that Kingdom of Bonesis not a pandemic novel per se, but I believe it is far more ... Read More
  • Q. Could you share a few of those insights?
    A. Even after all the research before and during this pandemic, much remains unknown about viruses. Sti ... Read More
  • Q. Viruses could be the source of human consciousness?
    A. According to many virologists, yes. There is a vital gene in our DNA—the Arc gene—that b ... Read More
  • Q. Like with bats. We know they were a possible source for Covid and a known vector for rabies and many other viral diseases. What is so unique about bats that makes them such a danger?
    A. Three reasons mostly. First, they’re the only mammal that flies.To accomplish this miraculous ... Read More
  • Q. What is Disease X?
    A. When I was researching this novel at the start of the pandemic in early 2020, virologists were expre ... Read More
  • Q. In Kingdom of Bones, you feature a pair of veterans who play an important role in the story: Tucker Kane and his military war dog, Kane. You even write scenes from the dog’s point of view. How did this duo come about?
    A. Tucker and Kane have appeared in past Sigma novels and in solo adventures of their own. I first enco ... Read More
  • Q. Speaking of future stories, what are you working on now?
    A. This past winter, I launched The Starless Crown, the first book in a new fantasy series, and I just ... Read More


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