I had plans to forego my usual three-in-one reviewing pattern for this season of The 100, but time got the better of me and I found myself lagging behind. I'll try to pick up the slack for next week's episode.
Two things are emerging from this season: a theme and a twist. The theme is one of every individual doing what they honestly think is right, with "right" being generally defined as "what's best for my people." As such, tension emerges between the principles of unity and tribalism; the understanding that everyone is of the same origin versus the cracks that are emerging not only between Arkadians and Grounders, but the factions within those groups.
And chillingly, the person doing the most to unite people is Jaha and his City of Light plot, which has suddenly become incredibly more interesting.
The season's "twist" is that despite the lengthy build-up of the Ice Nation and its Queen over the course of the show, it transpires that they're dealt with pretty quickly, leading to the Ark itself as the Big Bad of season three. Furthermore, they've felt the need to make one of our regulars a part of this new antagonistic faction, perhaps to give it a personal edge, or to try and muddy the waters with its treatment of ethical conundrums (ie, do we justify or support bad decisions when they're being made by someone we like?) The role falls to Bellamy, and more than any other creative decision, this is proving to be the contentious point of the season.