Knights of the White Camelia - S1.E13

A runaway Southern boy, formerly a bugler in the rebel army, comes to the school and has trouble accepting Moses' status there. Simultaneously, undesirables in the area are forming a local K.K.K. chapter. The boy becomes involved with them and the group tries to railroad Moses out of town. Murphy, the Marshall, and the boy's long-lost father join Moses in doing battle with them.