Penn and Linda
Did Penn the main mercenary leader have some previous relationship with that Lady Linda that was thrown off the train? After Travis Dane sarcastically gives her and her co-worker/lover a thumbs up after discovering them in bed, the camera zooms in on Penn who kinda looks hurt at seeing such a thing and then in disgust he tells her to put something on. She also seems to have a look of shame on her face.
What would prompt a girl like Linda to strike up a relationship with a guy like Penn? If there really ever was one. It's never stated but somehow implied by the look on Penn's face when he discovers her in bed with her co-worker.