Who was the murderer?
On Snowpiercer Season 1 Episode 4, the cat-and-mouse game reached a stunning conclusion.
With lives on the line, Layton had to make a decision about his future.
Meanwhile, Jinju found herself in danger, but she thought someone close to her was turning against him.
Elsewhere, Roch revealed a shocking development that threatened to change the whole world.
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.