An exchange is made between the two trains, but a far greater revelation might be just over the horizon.

Layton goes on the hunt, as Wilford works to boost morale. The resistance discovers a threat that could undermine everything they’ve worked for.

Wilford presses forward on his endgame while those who are close with Layton grow anxious to learn their fates; Josie tests her newfound ability.

As the train approaches Melanie’s retrieval point, Layton leads a furious attempt to try and pick her up but not without some sacrifices.

Layton and Miss Audrey make a risky play for Big Alice, but Wilford has his own plans.

Melanie fights for survival in treacherous conditions, vying to do what others before her could not.

Layton and Till investigate the murders. Wilford leads Miss Audrey down a dark path.

An engineering catastrophe on Snowpiercer forces Layton to make a difficult choice, one that might cost him everything.

Melanie embarks on her most dangerous mission yet, while Layton reckons with his personal choices.

As the Big Alice crew are granted shore leave on Snowpiercer, Layton and Wilford have differing opinions on the future.

Mr. Wilford arrives and threatens Snowpiercer, so Melanie makes a move that can’t be undone.

Layton uses his new position as train detective to investigate the murder while gathering intel for the revolution on the side. Meanwhile, Melanie faces a resource crisis, with potentially drastic…