The winter brings new challenges and dangers for the Duttons. Meanwhile, Spencer and Alexandra set off on separate journeys.

Alexandra runs into trouble while traveling alone. Making enemies along the way, Father Renaud and Marshal Kent close in on Teonna.

The search for Teonna continues. Alexandra and Spencer find their footing-on two different trains.

The Duttons receive good news. Alexandra catches a lucky break during her journey. Teonna reunites with a face from her past.

Jacob and his crew eagerly await Spencer's return at the train station. Teonna has a fateful run in. Alexandra braves the cold.