I've just finished Marseguro, the first book in The Helix War by Edward 
Willett. This book, along with the second Terra Insegura, have been 
released more recently in an omnibus edition by DAW called The Helix 
War, so if you're looking for it, look for the omnibus edition.
 
The main premise is that, fifty years ago, Earth was threatened with 
destruction by a massive meteor. This caused a radical shift in 
religions, and when the meteorite is hit by another meteor shortly 
before impact with Earth, a new religion called the Body Purified rises 
to power, claiming that because of their efforts to "purify" the Earth 
of all of the genetically modified life we've created--including 
genetically modified humans--God Itself saved them. During the religious
 wars, with the Body Purified slaughtering everyone genetically modified
 they could find, Victor Hansen, a geneticist, packed himself and his 
modified humans called Selkies into a ship and vanished.
 
He landed on a planet the Selkies and non-modified humans in his ship 
call Marseguro. They've lived there for fifty years, undetected by the 
Body Purified, who have solidified their power on Earth . . . but have 
not stopped looking for Victor Hansen. In fact, they've created clones 
of Victor in an attempt to figure out where he went with his monstrous 
Selkie creations. The current clone, Richard, and the gene-bomb placed 
in his DNA that will give him Victor Hansen's memories, is searching for
 them and has narrowed the field down to a particular section of space. 
It might take decades to find what planet Victor Hansen and the Selkies 
fled to . . . except that a few of the non-modified members of Victor's 
crew believed in the Body Purified, and one of them, Chris Keating, has 
been pushed far enough by the Selkies that he activates a distress call 
from Victor's original ship, leading the Body Purified directly to them.
 
The rest of the novel deals with the fallout of that setup. Can those on
 Marseguro protect themselves from the Body Purified's attempt to 
"purify" their planet of all genetically modified humans? They've only 
had fifty years to survive and attempt to settle the world, so have 
almost no weapons, but the Selkies can breath underwater and they 
certainly haven't been idle. Yet they have no idea that the Body 
Purified is on the way.
 
I don't read a lot of science fiction, but I liked the setup of 
Marseguro and, more importantly, liked the characters in the book. Most 
SF that I've read has a tendency to NOT have characterization, at least 
not at the same level as the fantasy novels I generally read, so I was 
pleasantly surprised in that respect. In this novel, a bunch of 
questions are raised about the ethics of genetic modification, whether 
what we create can still be considered human, etc, but I don't think the
 author beat us over the head with moralistic dilemmas. The book comes 
down pretty solidly on the side of the genetically modified humans as 
being . . . well, human, just like everyone else. The story focuses 
instead on the main characters and their struggles, to survive and to 
deal with unreasoning hatred.Richard has to deal with who he is--is he 
Richard, or is he just Victor Hansen?--while Emily Wood, a Selkie, is 
forced to grow up rather fast when the Body Purified arrives. Emily's 
mother, a geneticist, must face the consequences of the genetic 
battle--is it good or evil?--when she uses her skills in Marseguro's 
defense.
 
So, I thought the story, the setting, and the characters were all 
interesting. They certainly kept me reading. I've already started the 
second book, Terra Insegura. There were a few less believable factors in
 setting up the premise--such as a second meteor showing up in the nick 
of time to save humanity, plus a few other things--but none of those had
 major impacts on the plot and could be easily overlooked (at least by 
me). The story and characters themselves were solid and entertaining.
 
A word of caution though: This is NOT what I'd consider a military SF 
novel. It's science fiction, but there is little actual "battle" in the 
military SF sense and it's not hard SF either. Keep that in mind if you 
pick this up.
 
Joshua Palmatier/Benjamin Tate