MONDAY, JAN. 31

Snowpiercer

9/8c, TNT

Editors’ Choice

Of all the improbable things that occur on —set in a postapocalyptic frozen wasteland where humanity exists on a perpetually moving train—Season 3 premiered last week with a doozy. Layton (Daveed Diggs) and his fellow insurrectionists on the breakaway train found a survivor out there: Asha, a former