Mel's latest secret in Snowpiercer could hint at humanity's salvation. 1 / 8
Wilford holds her as prisoner, wanting to take back his train. 2 / 8
Alex, her daughter, then secretly questions her about a vial Mel has. 3 / 8
Mel says the snowflake inside is a memento, but Alex knows she's lying. 4 / 8
Its design really suggests the world is warming and life can restart. 5 / 8
Mel can't let Wilford know as he'll enact a genocide with his mad scientists. 6 / 8
They'll want less people alive for Earth's remaining resources. 7 / 8
Mel knows time is ticking away as both trains are now permanently attached. 8 / 8