One evening in 1946, a hungry stranger joins the family at Salthill, a horse ranch in the Skillihawk Valley in British Columbia. Grey St. Oegger welcomes the young African-American, who gives his name as simply Harris, in for a meal. But after dinner, when he sees Harris's affinity for horses, he extends that welcome indefinitely, offering Harris a job and a place to live. Over the next five years, Harris seems to settle in at Salthill, becoming...