A thoroughly enjoyable western from 1966. The two main actors involved here give top performances, with James Garner appearing as Jess and Sidney Poitier portraying Toller. I liked all their stuff, both on their own and as a duo. Bill Travers also stands out in his role as McAllister. It's a pretty excellent cast in truth. Another thing that is notable about 'Duel at Diablo' is the music, which is very nicely crafted by Neal Hefti - there's one particular piece that suits so, so well. The premise is great to see play out, even though it isn't a massively unique story. There is a secondary plot which is all about Garner's Jess, one that starts off intriguing but kinda fizzles out by the end - I would've appreciated a deeper dive into what was his original motive. What I just mentioned would be my only real criticism, as the rest of the film is terrific. Recommended.