I was hooked from the first episode (though it was pretty pretty cringy with the woman's arm right away). I really like how it is visually laid out - costumes, set, how it's shot. The story is fast moving too, and the actors do their characters so well. The way it lays how out society works is timely, as is the climate-related reason they are on the train in the first place. It's attractive and entertaining sci-fi, and definitely worth the watch. I'm not fussed about the believability of a frozen world and a train that has to keep moving - that's the basis of the story that sets the stage. I like it, and I'll keep watching.