Faces in the Fog

Faces in the Fog is a 1944 American drama film directed by John English and starring Jane Withers, Paul Kelly and Lee Patrick.
Plot.
Hard-partying Tom and Cora Elliott neglect their kids, 17-year-old Mary and 14-year-old Les. This worries their neighbor. Dr. Fred Mason.
At the urging of older boy Mike, Les sneaks a gun out of his dad's home and goes to a part at Dr. Mason's house, where Mary is flirting with 18-year-old Joe Mason. Mike accidentally shoots Les, who is only grazed. Another boy at the party tells the police about the incident. Tom believes Dr. Mason informed the cops, and is furious. He demands that Mary stop seeing Joe. Mary and Joe conspire to attend a school dance with other dates, but spend the night dancing. The two argue, and Mary leaves with Mike. The drunken Mike strikes a pedestrian with his car. Joe takes the injured man to the hospital, and is blamed for the accident.
Joe decides to enlist in the army. Realizing their fight was silly, Mary elopes with him. A jealous Mike sees them spending the night at a motel, and tells Mary's dad, Tom. Tom rushes to the motel and shoots Joe. Tom is acquitted for "defending his daughter's honor". Mary reveals that she and Joe are married. Mary and Joe are allowed to spend a week on a honeymoon before Mary faces a perjury trial for her various lies.