Evolution, as in the undead are evolving. Volume four of the series finds the professor, Hemp diving deep into his research to discover the latest zombie threat, what that means to himself and his friends, and how to defeat the ever-changing infected. The infected females are getting stronger, both physically and mentally. This new telepathy ability is giving our survivors some unexpected and quite deadly problems to deal with. Gem and Charlie are preparing to bring new life into this crazy world. Everyone fears the potentially dangerous effects that the environment, the offensive mist, or the defensive solutions created by Hemp may have on the fetuses. I’m enjoying the series so far. The characters are interesting, and the action is consistent.