Wonderfully written, will keep you at the seat of your pants. You will not want to put this down. Also, check out this podcasts, they are amazing. He is working on Nocturnal right now. Another excellent book.

Here's something cool. I was reading the journal Science while ignoring the speaker at a meeting today and I came across a paper by Ortland et al., 317, 1544-8, 2007 in which the authors do a very small part of what is described in Scott Sigler's book Ancestor -- they deduce from modern sequences of proteins what the sequence must have been in a 450 million year old common ancestor.

This piece of scientific realism is not all that make Sigler's work exciting -- he knows how to develop characters, build suspense, and generally draw the reader for a time into a frightening but believable world.

I'd like to make one other plug. Sigler is a great reader, and you can listen to him reading the entire Ancestor book free of charge as a podcast. ( )