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Our rating: 5/5 stars

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Posted Reviews

  • Probably the best Sigma Force novel to date

    5
    By БLoonИ
    With nods to the past but introducing plenty of new material, this book is definitely the best of the Sigma series to date.
  • Another Awesome Adventure

    5
    By Ohyeahfun
    Another blockbuster from James Rollins. This edition of the Sigma series takes us from Yellowstone to Antarctica as they try to stop another earth extinction event. Once again great writing with an all star cast leads us on a non stop action adventure. Highly recommend you read this series.
  • The 6th Extinction

    5
    By Bizbing
    I thoroughly enjoyed this book. It was full of adventure and interesting characters. A real page turner. I didn't want it to end b
  • Great Rollin's Fan

    5
    By Capizzi60
    Great story and fast pace adventure! A must read!
  • Meh

    2
    By frjeffgatlin
    I have been reading through the series of late. One question I have been asking is this; if Sigma Force is so secret and elite why is it that every bad guy knows about them and is always a step ahead. Their like the Keystone Cops until the very ending when they save the day. I know this series is not fine literature, but geez, do they have to be so predictable? Plus, after checking on some of his sources that he recommends, they are conspiracy laden tomes that can't be taken seriously. So his "facts" sometimes come from doubtful sources.
  • Great!

    5
    By StephUSI
    Another great book in this series! I can't wait to start the next book!
  • Disappointed

    2
    By Navjyo
    Thought it starts well, half way through it takes the routine path & the ending seems so obvious.
  • The 6th Extinction

    4
    By SAppelquist
    The Scientists are only slightly less beautiful than the Special Forces agents, and all are brilliant. Good wins out.
  • The 6th Extinction

    2
    By Ddsssaop
    Yet another book that goes down to the last few seconds to save the world from disaster. Tedious, ponderous and completely unnecessary. Couple that with a plot hopelessly complicated and you have a less than fulfilling read.
  • I do love Sigma!

    4
    By SciTeach3
    Being both a science teacher and an action reading enthusiast, I have always jumped at every new Sigma series novel that comes out. This novel was pretty good but not necessarily the best. I do miss the prolonged battle scenes of past books but did love the plot throw-back to Subterranean. I do hope James you are reading this and if so, I implore you, please bring back the original buddy team of Gray and Monk. That dynamic was so great and I have no idea why you have chosen to shelve Monk in the last couple of novels. Kowalski is entertaining but comes across more like Gray's "pet" commando - he is definitely no Monk.

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