Snowpiercer 1x04 "Without Their Maker" Season 1 Episode 4 Promo Trailer HD - A shocking twist in the murder investigation brings Layton (Daveed Diggs) and Till’s (Mickey Sumner) manhunt to a cat-and-mouse climax. But Layton is getting too close to Melanie’s (Jennifer Connelly) big secret, which may prove the most dangerous game of all.