First, let's clarify one simple glaring error in the film. If the spot of blood on the teacher's coat is his own blood, then that would obviously sway a number of jurors. (yes, I know they didnt have CSI in those days, but they could still match his blood under a microscope with the spot fairly easily). It should have been a simple matter to analyze the blood to see if it was his or Mary's. Also, it might have been more satisfying to find out who the real murderer was near the end of the film, or if the teacher was the real murderer. I thought Rains was a bit hammy in this role; but his over the top performance might have been realistic, considering the personality of the Southern DA. There are a few other flaws, but generally speaking, the film is compelling and relentless. Good courtroom drama.
Review of They Won't Forget
