 In the episode, The Swede (Christopher Heyerdahl) reveals himself to be the "White Spirit" as he aids the Sioux in their war with the railroad.Reverend Cole (Tom Noonan) also plays his role and hijacks the train taking Durant (Colm Meaney), Eva (Robin McLeavy), and Doc Whitehead (Grainger Hines) to Chicago.The Swede and Reverend Cole meet a band of Sioux Indians.