Relentless,intense, and non-stop running away from some really weird zombies. Collings has come up a very different approach to the end of the world storyline with his VERY unusal set of zombies. First off, you can't kill them. Like Mongo in Blazing Saddles that just makes them MADDER. 2nd, they can repair themselves somehow, and they are very, very, creepy.
A small group of surviors is on the run (during all 3 books so far) and each one with a cliff-hanger that leaves you going: "Oh yeah, I am so there for the next book". I have rated each of these Colony zombie books with 5-stars. The author is on to something REAL good.