Martin and Peppard are not my idea of great actors, nor Englishwoman Jean Simmons of the Western female (true, she played opposite Greg Peck in BIG COUNTRY, but in that film she was a sophisticated outsider) but it is an interesting cast all the same, plus Slim Pickens in fine form.
The plot has holes, direction, too, and yet something keeps you interested in watching this movie. Martin plays the villain, against type; he commands a troop of convincing heavies; Peppard comes into town, the silent fellow who ends up restoring order.
ROUGH NIGHT is pleasant enough, with some quirky touches, like Martin telling Peppard to bury one of his henchmen, the poker game between the two, and a whipping of Peppard that brings to mind Marlon Brando's in ONE-EYED JACKS.