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.

Alex must finally deal with her parental figures as a track obstruction uncovers a painful past.

As the bomber is revealed, Layton comes to terms with his past decisions before making an irreversible call.

As the train detours from New Eden, an environmental catastrophe threatens everyone onboard.