A grisly murder stokes class division on Snowpiercer, the Great Ark Train. Melanie Cavill, the powerful head of hospitality, deputizes a dangerous rebel to help solve the killing — Andre…

Sam and Dean investigate a case that leads them to a devout religious family that lives off the grid. The brothers realize that the parents are hiding a huge secret…

Flashbacks reveal clues to Dr. Smith’s past. The Robinsons contend with a new threat as the ship’s fuel supply starts dropping — fast.