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3.95  ·  Rating Details ·  5,192 Ratings  ·  405 Reviews
“The ancestors are out there…you have to believe me.”

From acclaimed author Scott Sigler—New York Times bestselling creator of Infected and Contagious—comes a tale of genetic experimentation’s worst nightmare come true.
Every five minutes, a transplant candidate dies while waiting for a heart, a liver, a kidney.  Imagine a technology that could provide those life-saving tr
Hardcover, 432 pages
Published June 22nd 2010 by Crown (first published January 1st 2007)
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4.5 stars (AND OH SO CLOSE TO A 5 STAR RATING). This was my first book by Scott Sigler and I now consider myself a fan and will be reading more of his books in the future.

This is a high-octane, fast paced scientific thriller that does a better job than many in this genre on two very important points:

1). I thought the author did a really good job with the characters and the dialogue. Even when nothing was going on with the plot (which was not often) the dialogue between characters kept me enter
Kali Mura
May 04, 2010 Kali Mura rated it it was amazing
ANCESTOR is about two deadly killers - one of them is a control-crazed millionaire named Magnus and the other is his lab-manufactured genetic horrors. Magnus was trying to create placid herd animals available to donate organs for humans who need transplants, but a delusional scientist tweaked the DNA and instead made large vicious predators. When Magnus tries to cover-up the project, these beasts get loose. Now everyone on an isolated island is at risk of being hunted down and exterminated eithe ...more
Mar 12, 2012 Ross rated it did not like it  ·  review of another edition
Possibly the most boring, useless book I have ever read.

This book has been out for quite a while but I have only recently read it and I felt the urge to review it.

I spotted this book while searching for something new to read. It was cheap and had a great premise: "Scientists on an island try to clone an ancient monster so they can use its organs in transplants. Everything goes wrong." Sounds good, right? A simple action horror. Something easy to read. Fun.

no no. Fun is not what this book offers.
Dec 26, 2011 Daniel rated it really liked it  ·  review of another edition
I like a good monster story that is backed up by a scientific origin: the experimentation and theory make for interesting reading before yielding the invariably ravenous result upon the poor scientists and support crew. Here, Sigler throws in some passages about DNA and animal-cloning and xenotransplating and species-jumping viruses, going into just enough detail to give his story just enough technical background. All of the high-tech gadgetry surrounding the laboratory and the armament of the a ...more
Some authors just need to be heard. Scott Sigler is one of those authors. He reads his books with such enthusiasm, it can't help but be entertaining. This book was one long chase filled adventure romp. I listened to it while traveling and it was perfect because I could pause and stop it as needed and not feel like I had to rewind (yes I said rewind, and yes I know it dates me!) I really can't tell you why but I just really enjoy Mr. Sigler's writing style and his stories. This is the third book ...more
✿ℎazℯℓ - thℯ ℛock Cℎick ℱairy✿
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Apr 15, 2017 Cheryl rated it liked it  ·  review of another edition
I can still remember the first book I read from this author, Infected. I would say that book did what the movie, Arachnophobia did to people watching it. It gave me the chills and creeps all at the same time. Thus, I really thought that I was going to be in for a treat and get the same experience with this book. I would say that the last third of the book was just what I was looking forward too but I wanted to whole book to be that way.

The characters were fine. None that really stood out for me
Lilyn G. (Scifi and Scary)
It feels like it had been a while since I'd read a genetic experiment / monster book, so I was very happy to get my hands on Ancestor. It provided a refreshing change to my reading schedule. It's not a breathtaking book by any means, but it is an enjoyable one. I found myself staying up about an hour later than I should have to finish it. In the notes in the back of the book, Sigler credits an earlier version of this story with being one of those stories that helped propel him to his current sta ...more
Michelle H

I read Ancestor simultaneously with my husband, a definite non-reader. I bought him the paperback for his birthday and I also had a copy on my Kindle because we both LOVED Sigler’s last books Infected and Contagious. (What can I say? To a bookdork, there is nothing sexier than a guy who will read with you…)

Since sharing books is such a rarity, I never shove books at him unless I’m convinced he’ll like them. Infected and Contagious were so creepy good, that I was SURE we’
Γιώτα Παπαδημακοπούλου
Όταν ήμουνα πιο μικρή οι ιστορίες τρόμου με γοήτευαν. Αυτός ήταν κι ένας εκ των λόγων που λάτρευα τον King ο οποίος όμως, και ιδιαίτερα με το πέρασμα των χρόνων, έμοιαζε να μην έχει νέες ιδέες αλλά, να καταφεύγει στην ανακύκλωση παλιότερων επιτυχιών που έκαναν το όνομά του διάσημο σε ολόκληρο τον πλανήτη. Και κακά τα ψέματα, μπορεί οι ιστορίες του να μας αρέσουν, τουλάχιστον οι πιο παλιές ωστόσο, κανένας δεν μπορεί να ισχυριστεί ότι συγγραφικά είναι μεγάλο ταλέντο αφού, δεν φτάνει μόνο να έχεις ...more
Aug 17, 2010 Paul rated it really liked it  ·  review of another edition
“Secret Experiment. Tiny Island. Big Mistake”

At its most basic level, the story in Ancestor by Scott Sigler could be described as a number of chases. Firstly, we have the US government trying to track down renegade bio-engineering company Genada, as they try to operate above the law. Then we have the story of evil predators chasing people around an inhospitable island in the dead of winter. It would be really easy to right off this novel as just that, but I strongly urge you not to. Ancestor is
"--that last light projected back towards the tower's base, illuminating oncoming death in a morbid spotlight. They came like a tidal wave, a black-and-white tidal wave with a frothing crest of wide-open mouths and long teeth. Oh he wished he could have written that down...that was the shit right there." Those were Gunther, the book's amateur novelist's dying thoughts.

I found this sub-plot or thread in the novel an interesting one. Gunther, on the security team, writes a trilogy of vampire roman
Jun 01, 2010 Belladonna420 rated it it was amazing
Shelves: scott-sigler
Monsters ARE real! But they don’t live in closets or under your bed… they were created by scientists in a lab. DNA combined to create the perfect predator. The only problem is, that’s not what was supposed to happen.

Ancestor tells the story of a good idea gone bad – TERRIBLY BAD! Although the creatures are the stuff of nightmares – and believe me, I’ll never look at a cow the same way again – the really scary thing is that at its roots, the story is not all science “fiction”. Let’s just hope the
May 01, 2010 Shirley rated it it was amazing
Shelves: horror-scifi
This review is for the new hardcover edition of ANCESTOR slated for bookstores in June of 2010.

The new hardcover edition of ANCESTOR follows the same plot line as the original. A group of scientist are charged with creating an animal whose organs can be used for Xenotransplantation. The ultimate goal is to provide organs for the growing list of individuals awaiting organ transplants. To reduce the incident of organ rejections the scientists are trying to create an animal, the Ancestor to all mam
Beth Copenhaver
May 02, 2010 Beth Copenhaver rated it it was amazing
This review is for the new edition of "Ancestor," due out June 22, 2010. You can pre-order now!
I listened to the original podcast of "Ancestor" some time ago and thoroughly enjoyed it. This version (June 22, 2010) is even better.

The basic premise is that a company has funded a project to create an animal that would be bred for organ transplantation. An 'ancestor' that would avoid the problems of rejection by combining genes from many, many mammalian species - bot halive and extinc. A fine, huma
Jun 25, 2015 Robjr73 rated it it was ok  ·  review of another edition
Ah man...I wanted to love this book. So much so that I almost gave it 3 stars instead of 2 simply because of my respect for some of this author's other works. The book is 400 pages long and the first 300 pages can probably be summed up in a short paragraph to describe the few significant events that actually happen. The build up to where we actually get to the creatures that these mad scientists have created is tedious. Man is it tedious. I give the author credit for his seemingly vast knowledge ...more
Apr 30, 2008 Dave rated it liked it  ·  review of another edition
Recommends it for: no one who has anything better to read
Recommended to Dave by: Skepticality Podcast
Shelves: fiction-read
It was OK, but might have been better with further editing/revision. Predictable and somewhat pretentious, but not bad as escapist reading. Loaded with superfluous simile like poorly selected corpus of quotes. When I'm ill, I'll accept diversionary reading I might otherwise give up on. I did give up on another of the author's books "Infected". I feel Scott Sigler may be better at self-promotion than at writing. When I finished I didn't feel ripped off or that I'd completely wasted my time -- jus ...more
Feb 16, 2009 Tena rated it it was amazing
I love this book. I cannot stress enough how incredibly plausible this storyline is when you get down to the science of it. Sigler has created a thriller that grips you deep in the primal gut and won't let you go. It's hard to put the book down. The characters are real, either as hateable people you are happy to see die, or likeable people you want to save. There is romance and love without being sappy or corny, and, true to Sigler's MO, there is lots and lots of violence. I seemed to remember M ...more
Feb 28, 2015 Monica rated it did not like it  ·  review of another edition
This book is not supposed to be boring, Ancestor is supposed to be a Jurassic Park meets Predator type of read. The premise is promising and it should have been an easy read but there was too many chapters dedicated to unnecessary, punishing dialogue. The Characters are supposedly brilliant intellectuals yet they read like emotionally stunted pre-teens. I wasn't expecting anything profound from reading Ancestor but I was expecting something fast-paced and exciting. Unfortunately Scott focuses mo ...more
Nov 09, 2012 Patrick rated it it was ok  ·  review of another edition
Not nearly enough "ancestor" violence. This is essentially a monster story with two monsters and a dozen or so uninteresting potential victims. The book focuses too much on the flat victims and the uninteresting second monster instead of the titular monsters. The first half of the book is a fun slow burn as you await the arrival of the ancestors but when they finally arrive they play second fiddle to a boring, run of the mill human villain. There is also a chunk of the book devoted to federal ag ...more
May 09, 2010 Stephanie rated it it was amazing
As a fan of the original version of Ancestor, I was looking forward to reading this new, updated version. It didn't disappoint. This new version shows how much Scott Sigler has improved as a writer since he first released Ancestor as an audio novel, and the original was great! The story is tighter and it's clear he's done quite a bit more research for this release of the story. Ancestor is a thrill ride from the very beginning. I found myself staying up until all hours of the night thinking I wo ...more
Jan 24, 2012 Vix rated it really liked it  ·  review of another edition
I got this book as I really like how Scott writes...
This was a page turning book with a good underlying story, which yes, would be really easy to turn into a movie, he gives some great mental/visual!
and yes, it has its cliche moments.... some unbelievable bits too!
but you like or loathe the characters.... and I loved Mookie... she was my hero!
I did end up feeling sorry for the "ancestors" and their mums (not to mention the squirrel)
lots of background story, lots of descriptive on how things
Greig Beck
May 11, 2011 Greig Beck rated it really liked it  ·  review of another edition
Shelves: thriller
Bioexperimentation, great characters and settings. Add in some very raw gore and you have a recipe for great fun. Sigler knows how to create tension, and then unleash the jolts with flair. I loved his villains - menacing and brutal, and his good guys had just enough flaws to make them believable, but likeable.

Sigler also has unique creature ideas, and the way he blends the science fact with fiction is very well done.

My only reservation, and I'm sure its just me because I watch Futurama, was that
Feb 10, 2009 Jedidiah rated it liked it  ·  review of another edition
Shelves: sf
I gave Ancestor a shot after reading Earthcore, and it generally works but it's not quite as good. Sigler is very good at coming up with thrilling stories and great spooky locales to set them in, but both books are very cold. The action is clinical and you don't care about any of the characters, and he seems to take unusual pleasure in sadistically killing everybody off. I would hesitate to call them badly written, as I hope he's matured as a writer since Ancestor, but my enjoyment of his books ...more
Feb 09, 2009 Tressa rated it really liked it  ·  review of another edition
Shelves: horror
I had just finished the podcast for Nocturnal when I started reading Ancestor. Nocturnal blew me away with the suspense, characters, and monsters, so I assumed Ancestor would do the same. Ancestor is a great story but it doesn't compare to Nocturnal, Infected, and Contagious.

I did enjoy the Asian character and her rising foreboding about just what she was doing messing with genetics. The beasts made the book, though. Intelligent killing machines.
Apr 14, 2012 Bobby rated it really liked it  ·  review of another edition
Recommends it for: All Michael Crichton fans and anyone with insomnia.
Sometimes its really fun to read a book because it justs keeps you turning the pages. I found this to be the perfect reason to read "Ancestor"!! The characters?? A little unbelievable, but who cares. This is a fast paced story that starts with a bang and ends with explosions and all kinds of excitement in between. This does for stem cell research what Jaws did for the Great White. Gory, Good job Scott Sigler. Oh yeah, and thanks for keeping me up all night!!
Jun 21, 2015 Karen rated it really liked it  ·  review of another edition
Shelves: sci-fi, horror
I just finished the last page a few minutes ago and my heart is still pounding at the final action sequences. I think this story would make a great movie!! Science gone all freaky! Definitely a page turner!

Edit: I just saw somewhere that this is a dualogy. I need to go find the second book pronto!! I'll be back to share what it is! ;)

Edit: Aha, book 2 is still to come. Whew. Thought I missed something.
Mar 27, 2016 J.M. rated it really liked it  ·  review of another edition
I saw this tagged as a medical horror story somewhere but I wouldn't call it that because there was little or no reference made to actual science behind the ancestors created in the story. It was nowhere near as elaborate as Jurassic Park but I still enjoyed this very much.
May 09, 2012 Linda rated it it was amazing  ·  review of another edition
Freaky let me tell you. Sigler is not afraid to develop a character then kill it soon after. This would make a good movie.
Jul 06, 2010 karupinx rated it did not like it  ·  review of another edition
Shelves: tried
I had a hard time getting past the beginning. A VERY hard time.
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Epilogue 3 7 Sep 09, 2016 07:13PM  
Alternate Realiti...: Jian's eggs- Ancestor 1 5 Oct 20, 2015 08:25AM  
Alternate Realiti...: Gunther in Ancestor 1 2 Oct 20, 2015 08:24AM  
Alternate Realiti...: Ancester 2 5 Oct 01, 2015 01:24PM  
October book of the month 1 3 Sep 29, 2015 11:01AM  
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Get Scott's free, unabridged weekly audiobook episodes from iTunes by subscribing to his podcast.

#1 New York Times best-selling author Scott Sigler is the creator of fifteen novels, six novellas and dozens of short stories. His works are available from Crown Publishing and Del Rey Books.

In 2005, Scott built a large online following by releasing his audiobooks as serialized podcasts. A de
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