The premise of Paul Levinson's "The Silk Code", subcultures exploiting low tech but high science genetics through the ages, provides more than enough interesting material around which to tell just about any kind of story. But, like so many other first-time science fiction novelists, Levinson writes in first person and never shows you something when the main character can think it instead. Sometimes even that's too much: "A soft, pervasive light engaged us as we walked inside---keener than flourescent, more diffuse than incandescent, a cross between sepiatone and starlight maybe, but impossible to describe with any real precision if you hadn't actually seen it, felt its photons slide through your pupils like pieces of a breeze." (p. 35, paperback). Levinson seems to take the "science" part of "science-fiction" a little too literally. The dialog isn't any better, and is often indistinguishable from a character thinking to himself: " 'Ah, we come full circle--this is where I came in. Alas, we unfortunately are not the only people on this earth who understand more of the power of nature than is admitted by your technological world. You have plastics used for good. You also have plastics used for evil---you have semtex, which blew up your airplane over Scotland.' " (p. 38)
Levinson spends far too many paragraphs with the main characters simply wondering what'll happen next, summarizing what's already happened, and stating the obvious. Read the sample from Amazon, it might be all you can stand.