Great movie, but I saw 2 plot holes (I need a expert in law) (spoilers).
I saw 2 plot holes: I have a question to a lawyer: Webb couldn't have been arrested due to double jeopardy. He can't be tried for a crime that a court of law has already declared him not guilty.
The second hole has to do with this: If Susan had an undying love for Webb (and he didn't have that gun obsession) why didn't she just say: "I'm a slut. The person who impregnated me wasn't my former husband, or even my current husband, but a 3rd party." It probably would have ruined her reputation in 1951, but at least her one true love (or maybe even Susan herself) would not have ended up in jail.