Quick on the Trigger was Charles Starrett's second "Durango Kid" picture for 1949. It all begins when ousted sheriff Steve Warren (Starrett) is put on trial for the murder of heroine Nora Reed's (Helen Parrish) brother. Steve is innocent, of course, but he doesn't stand a chance against prosecuting attorney Garvey Yager (Lyle Talbot) -- especially since Yager is the real killer.

A singing cowboy clears a boy accused of murder by finding the real killer.

An insurance company investigator goes to a small town to probe into a case of supposed suicide. The natives are not very cooperative and some turn hostile, leading to suspicion of foul play.