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3.95  ·  Rating Details ·  4,981 Ratings  ·  380 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 tran
ebook, 432 pages
Published June 22nd 2010 by Crown (first published January 1st 2007)
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(showing 1-30 of 3,000)
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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  ·  review of another edition
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
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
✿ℎazℯℓ - thℯ ℛock Cℎick ℱairy✿
This author really makes the strangest animal antagonists!


Imagine having cows as antagonists.

Oh gosh. It was so weird, but it was soooo creepy at the same time. What makes it more scary is that it felt as if it could really be true. One day, a delusional scientist will make bizarre and deadly creatures, I'm telling you!

This book also shows that justice shall be served! That dog sure is my hero!! Read it so that you'll know what I'm talking about. Heh.

I admit, the start of this book was a
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’
Jul 07, 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
"--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
May 01, 2010 Shirley rated it it was amazing  ·  review of another edition
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  ·  review of another edition
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
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
Oct 08, 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
Jun 01, 2010 Belladonna420 rated it it was amazing  ·  review of another edition
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
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 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
Jul 21, 2010 Tena rated it it was amazing  ·  review of another edition
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
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  ·  review of another edition
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
Apr 05, 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.
Greig Beck
Aug 05, 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
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
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
Robert Gelms
Jan 25, 2016 Robert Gelms rated it really liked it  ·  review of another edition
By Bob Gelms

Our book this week is Ancestor, a novel by Scott Sigler and it’s absolutely overflowing with xenotransplantation, that is, the transplanting of organs from one species into another species. It’s as if H. G. Wells’ The Island of Doctor Moreau meets Michael Crichton’s Jurassic Park meets Mary Wollstonecraft Shelley’s Frankenstein. It’s an excellent book, another one of those infamous I-can’t-put-it-down novels.

In the Arctic there are three or four high-tec companies
Jan 16, 2016 Piggie rated it liked it  ·  review of another edition
This was one of those books that had a lot of potential that the author just didn't reach into. I think that he could have done more character development, which could have made this a really good character driven novel. In some ways, the book feels like that is what it wanted to be, but it never really lets the characters change as the plot moves along. Big things are happening and I don't think the characters were dynamic in their responses to these events. When a character does change their v ...more
Jul 22, 2015 Lindsay rated it it was ok  ·  review of another edition
Shelves: misc-horror

A band of scientists (hired by two insane Italian brothers) are tasked with creating a brand new mammalian animal. The purpose is an interesting one: they want to create an animal that shares enough DNA with humans so that the organs will be compatible, and then use those animals for organ transplants. They have complete control over what characteristics go into the animal, but unfortunately one scientist has a severe case of the crazies and genetically engineers vi
Chris Bauer
Mar 25, 2014 Chris Bauer rated it really liked it  ·  review of another edition
Yet another installment of "Scott Sigler Week Read-a-thon"

SYOPSIS: When a biomed research company is hellbent on both avoiding the regulations of government oversight and leapfrogging their competition at any cost, they remove all safety checks in the name of science and proceed in a revolutionary genetic regression DNA project with the aim of creating a living herd of rejection-proof organs for humans. What results is the typical mad scientist messing with shit they should leave alone and pay t
Apr 16, 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!!
Aug 11, 2016 Luke rated it it was ok  ·  review of another edition
This is my second foray into Scott Sigler, and frankly, this came pretty close to killing my interest in him. I previously read 'Nocturnal' and loved it in all its cheesiness. 'Ancestor' on the other hand, just feels hollow and dull.

The story is imaginative enough - laboratory made monsters and over-ambitious pharmaceutical execs making a mess of things...for, well, like 10 people give or take. 10 seriously uninteresting people. It seems like Sigler decided to rely entirely on backstory to devel
Jen MP
Mar 05, 2014 Jen MP rated it it was amazing  ·  review of another edition
Shelves: favourites
I loved this book. The writing was really good, and was really smart as well. The entire book was a thrill ride from beginning to end, it was so hard to put down. There was never a part in this book where I felt bored. It sort of read like it was a movie, and it was completely exhilarating. Some of the characters could have been fleshed out a little more, but it wasn't a big deal. My only somewhat negative comment would be how the characters used the phrase 'eh?'. The author said it was a way of ...more
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Epilogue 3 5 Sep 09, 2016 07:13PM  
Alternate Realiti...: Jian's eggs- Ancestor 1 4 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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