Woman: Is Decky your daughter?Yes, a man can be now sure with DNA testing.
Clay Lomax (played by Gregory Peck): Well, looking at her from over there, what would you say?
Woman: One minute, yeah, but the next minute, (shakes head).
Lomax: Well I'm not sure myself.
Woman: Is any man ever sure?
Lomax: Oh well, with some women, -
Woman: (laughs) Do you really believe that? Or do you just want to believe it?
There is also a scene where both of them show that they would save the life of their own natural child over a step-child or anyone else. Makes sense to me. I've heard people claim that a step-child gets as much love as a natural child, but I do not believe it.
Lomax would have been killed, but the crazy bragging hired gunman was told not to kill him:
When you buy a killing, Bobby Jay, you sell yourself. Now a reliable professional killer is a closed-mouthed man. Me, I'm a businessman with a reputation to protect, or is that putting it too bluntly for you?The gunman shot a cup off the head of Lomax's daughter, and Lomax eventually turns the tables on the gunman. These old western movies have lots of quick-draw duels. And then Lomax goes back to the woman who offered to take care of his alleged daughter. I guess a happy ending requires him to find a wife to help rear a daughter.