Snowpiercer: How Could [SPOILER] Still Be Alive?

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Warning: SPOILERS forSnowpiercer Season 3, Episode 7 — «Ouroboros»

How can Melanie Cavill (Jennifer Connelly) still be alive inSnowpiercer season 3? Melanie's death at the end of Snowpiercer season 2 was believed to be definitive and was treated as such by the train's passengers, including her daughter, Alex (Rowan Blanchard), Andre Layton (Daveed Diggs), and Mr. Wilford (Sean Bean). Wilford left Melanie to die on the side of the tracks, and her suicide note was found by Layton and Alex after they stole Snowpiercer's engine and used their pirate train to travel to Cavill's last known location, the Breslauer Research Station in the Rocky Mountains.

Melanie has appeared in Snowpiercer season 3 as a dream-like vision manifested by both Alex and Wilford. But the fact that Melanie is never far from either of their minds was an indicator that she was dead. Meanwhile, it was Cavill's discovery of evidence that the Earth is starting to warm in certain areas that sparked Layton's quest to bring the train to New Eden in the Horn of Africa, which he was doing, in part, to honor Melanie's memory. She volunteered for a solo mission to the Breslauer Research Station to prove her theory, and Wilford took advantage of Melanie's absence to gain control of Snowpiercer and ensure Cavill never got to board the train again. Melanie's circumstances when she was abandoned were dire; she lost her supplies in an avalanche and had no food. Cavill committed her shelter and its dwindling power supply to keep her New Eden data safe for Alex to find. All evidence pointed to Melanie walking into the white to die.

Related: Snowpiercer Reveals Wilford's New Power Over The Train

However, Snowpiercer season 3, episode 7, «Ouroboros,» ended with Wilford