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

While Emma, David, Regina and Hook continue their search for the Wicked Witch, she, in turn, is planning a dark surprise for David, and Zelena’s prisoner is powerless under her…

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…