Cover of the scifi/horror novel EARTHCORE, by New York Times best-selling author Scott Sigler.


Previous versions of this novel are out of print. We are releasing a re-written, updated version in late Summer of 2015.

Available in eBook and audiobook formats.

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Deep below a desolate Utah mountain lies the largest platinum deposit ever discovered. A billion-dollar find, it waits for any company that can drill a world’s record, three-mile-deep mine shaft. EarthCore is the company with the technology, the resources and the guts to go after the mother lode. Young executive Connell Kirkland is the company’s driving force, pushing himself and those around him to uncover the massive treasure.

But at three miles below the surface, where the rocks are so hot they burn bare skin, something has been waiting for centuries. Waiting … and guarding. Kirkland and EarthCore are about to find out firsthand why this treasure has never been unearthed.

“From where I stand, Sigler is at the top of the tree.”
Jason Bradbury: BBC

“An exciting read, and very highly recommended for all science fiction enthusiasts, EarthCore would be a popular addition to community library SciFi collections and documents Scott Sigler as an effective, entertaining storyteller.”
Midwest Book Review

“This novel’s got it all: cutting-edge science; a perfectly-realized setting; terror both plausible and profoundly unsettling. EarthCore is more exciting than a thriller has any right to be!”
Lincoln Child: New York Times bestselling co-author of RELIC

“Bad things happen to bad people in this book. Then they happen some more. Very. Bad. Things. Things that make you wonder just what sort of childhood the author must have lived through. No way I’m going caving with him anytime soon. Or letting him near knives in my presence.”
Evo Terra: Founder of

“One thing I particularly like is that Sigler didn’t pull his punches or cop-out at any point. All the threats lined up at the beginning of the book were delivered on before the end. In fact I strongly recommend that you not get too attached to any characters as Sigler is ruthless at culling them throughout the novel.”
Eoghann Irving: Solar Flare

“There’s a lot to recommend this book, and anyone who enjoys sf thrillers will enjoy this.”
Steve Mazey: EternalNight

“EarthCore may be considered a sci-fi novel, but I would rate it right up there with some of my favorite creepy horror novels. EarthCore is a fantastic choice to add to your bookshelf.”
Tracy Farnsworth: Roundtable Reviews

“I loved this book! Right from the start it built the tension and had me wondering ‘What the heck is it?’ Then, after the reveal it had me squirming in my chair going “Oh my God! EEK!!”
Melanie Gilbreath: Coffee Time Romance


  1. Pingback: Not About Lumberjacks

    1. Profile photo of A KovacsA Kovacs

      Hi Brian,

      There are plans to release an updated version as a ebook sometime later this year. At the moment, there are no firm plans to make a print version, but a general idea that we’ll do a small run of print books when the sequel is also finished, as a special edition.


  2. Profile photo of Perry BarnesPerry Barnes

    Wait a second, in the version of Earthcore I’ve read, Earthcore headquarters is in Detroit. And the story tease place after the events in Contagious, right? So…

      1. Profile photo of Gary PoolerGary Pooler

        So, here, as of April 2014 you state that Earthcore is available to listen to for free. Here we are in April of 2015 and searching iTunes for Earthcore yields nothing. Why aren’t all previous versions of Earthcore available for download for free?

        1. Profile photo of scottsiglerscottsigler

          @Hobart_Floyt: All previous versions of books aren’t available for free because we’re dedicated to story continuity, not just now, but ten, twenty and thirty years from now. When EARTHCORE is re-released near the end of 2015, that will be the only official version. We want kids who are in grade school now to be able to enjoy the Siglerverse as a well-integrated experience when they are in their twenties and thirties.

          The other (and related) reason is torrent sites and pirates. We remove old files in an effort to mitigate proliferation of books that are a) lower-quality audio, and b) no longer canon. Again, no matter how people come across my work, we want them to see the final version that properly integrates into the larger Siglerverse contest.

          1. Profile photo of Gary PoolerGary Pooler

            I see. Thank you for the reply. I wasn’t here at the beginning. I was just thinking that it would be cool to hear how it all began. Que sera, sera.

          2. Profile photo of Andy DillbeckAndy Dillbeck

            Really looking forward to the re-release of Earthcore.

            Got my brother hooked with the GFL books, and he just got to the parts with the Prawatt. I told him they show up in another book with a bit of the plot, and he is excited to listen to it next.

            I still have the original Earthcore files on my computer still, but I’d like him to hear the full cannon updated version instead.

  3. Robi Keifert

    just like to say I’m a huge fan, even before the joe rogan podcasts, I can not wait for the Earthcore sequel !!! this sort of thing is my bag baby.- Robi Keifert, Salt Lake City, UT

  4. Marios

    Wow, all prints have been gathered and destroyed?

    That makes my first print, dedicated and signed copy worth some serious bucks!

    But I wouldn’t sell it for the world!

    Keep up the good work Scott, can’t wait for Earthcore 2!

    1. Profile photo of scottsiglerscottsigler

      @Marios: Well, scarcity is what makes the price so high, and you holding onto yours is part of the master plan. Although, I get no money out of this master plan, so, there you go. Glad you like it!

  5. No JacqiB

    Well I look forward to that re-release. I just finished and loved the podcast and told several non-audiobook friends about it.

    1. Profile photo of scottsiglerscottsigler

      @No JacqiB: Because we had to buy up the print copies that were not yet sold and destroy them as part of our five-book deal with Crown Publishing. Crown wanted all the rights to All Things Sigler and didn’t want competition in the marketplace.

      We do plan on re-publishing it in the near future, but can’t say exactly when.


    GO “A” you’re da BEST

    I’m still here…I’m listening. JU you ungrateful fish-terd. 2 fumbles what the SHUCK!

    ……….The extremely humble owner of “THE ROOKIE” #2487/3000…..NOCTURNAL (Rewrite) Byron Metz (as “Baldwin Metz,” medical examiner for San Francisco police)

  7. NeilColquhoun

    A – your work is valued and…

    …much appreciated.

    Lots of love and respect from Bonnie Scotland.

    Stay Alive – Neil

  8. BigJohn

    Just gonna throw it out there…


    Thanks, A. You are invaluable, and much, much appreciated. :)


    Gutter Sistren whipping boy, innoventor of words, Life Coach to the Damned.

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