Lawman

The Ugly Man (2x19)

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Lily is threatened in an alley at night by a man calling himself ""the ugly man"". He seems to know all about her and accuses her of deceit and lies (although she is sure she doesn't know him) and he promises to kill her at midnight on some night soon. Dan and Johnny begin a constant vigil, one or the other being with her 24 hours a day until they can track down a man with no name and no face. Finally, one of the girls who works in the saloon discloses a secret that unlocks the mystery.