Film noir, prison break drama or western? It doesn't seem to know and you'll give up caring to figure it out about a third of the way in. This is a lacklustre B movie in any genre. Starts out a western shoot em up then takes on a Cagney in the big house edge. A good scene at the end with a gatling gun though, if you don't mind fighting to stay awake to get that far. Notable if spotting Earl Holliman in early bit parts is one of your favorite past-times, and Virginia Mayo is watchable if you like your western dames talking tough as nails and looking like they stepped out of a 50's LIFE ad for Lee Jeans. Otherwise, skipping this would probably be more to your liking.
And I agree with the other reviewer that the title refers to Ms. Mayo's *mm-hmm*. If you can find an actual canyon anywhere in this picture you paid closer attention than I did.
And I agree with the other reviewer that the title refers to Ms. Mayo's *mm-hmm*. If you can find an actual canyon anywhere in this picture you paid closer attention than I did.