When Tunner splits up with Goodwin in the swamp, as the camera is tracking with him to the right, a moving shadow of the camera and a person beside it is visible on a patch of sunlit ground near the bottom of the frame.
Although Jory is shown escaping on the Angels Flight funicular in downtown Los Angeles, the context of the story makes it clear that the prison is not located in California.
Two men from the city with no experience trying to find their way around the Louisiana bayous and swamps alone with no local guide or even a map is highly improbable.
When Lt. Tunner gets home and sits down at the kitchen table with his wife Janet, a moving shadow of the boom microphone is visible on the wall behind him, to the left of the lamp.
When Jory jumps off the train, he is immediately spotted by two officers who give chase, but they do not call out to alert the other men who have surrounded the train.