Great direction, flawed script.
I really wish the story was on pair with the fantastic direction. There are several things that really stick out here, for the most part:
-Leigh playing a super naive character, she gets called by some random stranger in the middle of the street and she gladly follows him?
-Heston's clueless character, acting perfectly calm while having the brother of a man he's sending to jail sniffing around him. Then he drops his wife in some lonely motel in the middle of nowhere like nothing.
-The hotel clerk. As another topic here clearly pointed out, the forced un-funny "comedy relief" character was utterly annoying to watch.
-For all the so called "evilness" of the gang that attacks Leigh, they came out being rather tame and not very fearsome. Not much "evil" in their touch.
I can see why the movie gets a lot of praise, the direction is, once more, incredible. Welles was obviously a gifted director, he knew where to put the camera. Nodoby will ever deny that, but the script was just weak and hurts the movie badly.