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

Sam and Dean press their luck in a winner-takes-all game of pool. Meanwhile, Castiel hunts down a would-be murderer, but not for reasons one might think.

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

The rebel forces are on their heels when a dangerous foe joins them. A plan is hatched to take the train, but it may destroy them all.

Revolution has finally come. As Layton leads the lower classes forward in armed rebellion, Melanie’s house of cards collapses.

On a divided Snowpiercer, Melanie intensifies her search for Layton while Layton is weaponizing her secret. Third Class faces a reckoning when he presents them with a choice.

Hiding out with help from his allies, Layton lays track for revolution and an engineering emergency threatens every soul on Snowpiercer.

Tensions between Third Class and First Class are boiling as Melanie stages the trial of the Snowpiercer killer. Third Class threatens a work stoppage, demanding representation on the jury, and…

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…

Eve, the Mother of All, unleashes a new monster upon the world: a black worm-slug that can enter the brain and force people to kill. Sam and Dean join forces…

The Legends travel back to the Old Wild West and gain the aid of a true legend, a morally ambiguous gunslinger with a penchant for danger, Jonah Hex, who has…

Sam and Dean finally make contact with their father, but he tells them to stop looking for him and sends them on another ghost-hunting job. Frustrated with their father’s evasiveness,…