Have Gun, Will Travel S03 E39 The Search

"I don't think you got a very good look at this gun while you had it."

Mrs. Kilmer is dying and asks Paladin to find her missing son, Martin Kilmer. Edwards, a detective, managed to trace Martin as far as Harper City, where Edwards was then killed. Fred Harper, a half crazy man who runs Harper City, doesn't want Paladin to succeed.