Overview:
From the back cover:
In the Nevada desert, an experiment has gone horribly wrong. A cloud of nanoparticles–micro-robots–has escaped from the laboratory. This cloud is self-sustaining and self-reproducing. It is intelligent and learns from experience. For all practical purposes, it is alive.
It has been programmed as a predator. It is evolving swiftly, becoming more deadly with each passing hour.
Every attempt to destroy it has failed.
And we are the prey.
So just how interesting can a book about clouds of little robots that kill people be? Very interesting, actually.