In the first scene with Patsy Flint at the bar, her beauty mark (mole) is shown by her right eye; the 2nd scene with Patsy in her apartment shows the beauty mark next to her left eye.
When Capt. Rawley goes to the motor court to get Det. Patrick at the beginning of the film, the exterior location shot shows Rawley looking though the window of the cabin at Patrick inside. In the next obviously studio shot, the window and frame are completely different.
When Det. Patrick goes to the snowbound mountain cabin to get Eden, the exterior location shot shows a lot of snow on and around the door. In the next obvious studio shot, there is hardly any snow and the door itself and the cabin's siding is different.
On the ride with Ray taking Eden to prison, the amount of daylight changes over time and between shots - from light to darkness, to light again, etc.
When Ray returns to the motel room and finds Eden not there, he goes to turn on the beside lamp, but the studio lights for the room come on a beat before the lamp is lit.
The width of the trains' passenger car set is extreme - way more than the maximum size of ten feet of the day.
A fight breaks out with 'the security guard' when leaving the factory. The security guard reacts as if he'd been hit by the second punch thrown by Ray, though it's clear Ray's fist misses by about six inches.