I just noticed that the 4. questions has not been answered completely.
The correct answer would be:
Ellen Graham (singer) met Philip Raven (killer) - "This Gun for Hire" (1942)Ellen is forced to postpone her wedding plans because of her commitment to Burnett, and unwittingly shares her seat on the train to Los Angeles with Raven. When she notices that he has stolen five dollars from her purse, she demands the return of the money, but graciously refrains from turning him in.
http://www.doctormacro.com/Movie%20Summaries/T/This%20Gun%20for%20Hire.htmI will amend my post below accordingly.
@pingli
By the way you mixed up the names of the posters. I did not answer question #4