On Snowpiercer Season 3 Episode 9, Melanie (Jennifer Cavill) returns to the engine to join Ben (Iddo Goldberg), Javi (Roberto Urbina) and Alex (Rowan Blanchard)
Two trains. Two chapters to tell. One runs hot and fast. The other lumbers slow. Cold cast in Wilford's iron grip, an armored tortoise plodding after a hare. Everyone under a single thumb, serving a single obsession, to retake the pirates and exact his revenge.