: Bellamy uses his own history of war crimes to talk down Riley from assassinating Roan. This serves as a significant character beat showing his growth and emotional damage. Critical Analysis The 100 Season 4 Episode 5: The Tinder Box Recap
: The most significant event is the total destruction of the Ark by Ilian , who seeks vengeance against technology. Reviewers from IMDb note this as a "catastrophic failure" that resets the survival stakes for the season. [S4E5] The Tinder Box
: The episode reveals that Raven's increased cognitive speed is a result of remaining ALIE code causing internal brain damage. Critics from TV Fanatic noted this as a dark development, effectively setting up a season-long arc of self-sacrifice. : Bellamy uses his own history of war
