5x26 - Dr. Quinn, Medicine Woman

Sully lies to everyone about what he is doing, but the truth comes out. Cloud Dancing flees to the Tongue River Valley. Sgt McKay (David Beecroft)sees Sully at the scene. After Sgt O'Connor (Patrick Kilpatrick) finds out what happens, he goes after Sully. They get into a fight and they both go over a cliff