Z nation was a modern zombie thriller. It kept me hooked throughout, mostly but in between and at times, especially during the second season, it seemed like the show was being unnecessarily dragged and I continued to watch it solely for closure. However, the show again caught speed in season 3 and kept me enthused ever since. The characters were strongly written and I can't name one I disliked. Warren was undoubtedly the best, and Doc was warm and welcoming. I was glad to see Cassandra surviving through Murphy's bite, and the writers very intelligently killed her character altogether, which was at a point that I was no longer hoping for her to stay because of the way Murphy was harnessing her services, and it was cringing.
Moreover, I liked the Zombie concepts like talkers, blends, and zombie jargons like Bizkits this show came up with. It was quite an innovation I thoroughly enjoyed it but also, at times, some things failed to make sense, like where did Red's brother vanished? how did 10K did not turn full blend? how come Warren was dead after the black rainbow but did not change in appearance, and neither ever craved or had Bizkits?
Even though logic might not seem to be an important aspect of such fictional shows but holds utmost potential since the very idea and concept of writing fiction is to write it in a way so it seems true or else it reduces the make-believe impact of fiction.
Also, the ending was a little abrupt and seemed incomplete. It would have been better if Roberta's condition was further discussed, the vaccine was made, and the show would have been ended with a peek into a future.