Snowpiercer

Melanie Cavill deputizes the world's only surviving homicide detective to help solve a killing.

Layton uses his position as train detective to investigate the murder and gathering intelligence.

Layton descends into Snowpiercer's black market with Till; Melanie stages a prize fight.

A twist in the murder investigation brings Layton and Till's manhunt to a cat-and-mouse climax.

Tensions between Third Class and First Class are boiling as Melanie stages the trial of the Snowpiercer killer and makes a fateful decision about which side to favor.

Layton lays track for revolution; an engineering emergency threatens every soul on Snowpiercer.

On a divided Snowpiercer, Melanie intensifies her search for Layton; Layton weaponizes her secret.

Revolution has finally come and Layton leads the lower classes forward in armed rebellion.

The rebel forces are on the ropes when a dangerous foe defects to their side.

In the revolution's aftermath, Layton and Melanie realize the greatest threat to their survival is right over their shoulder.