The Locked Door

The Locked Door is a 1929 American PreCode drama film directed by George Fitzmaurice and starring Rod LaRocque, Barbara Stanwyck, William Stage Boyd, and Betty Bronson. The film is based on the play The Sign on the Door by Channing Pollock. The play was first adapted for the screen in 1921 as The Sign on the Door, starring Norma Talmadge. The Locked Door was Barbara Stanwycks second film appearance, first starring role, and first talking picture.

Eighteen months later, Ann is happily married to wealthy Lawrence Reagan William Stage Boyd. They are about to celebrate their first wedding anniversary when Frank resurfaces in Anns life, this time as the boyfriend of her naive young sisterinlaw, Helen Betty Bronson. Though both Ann and her husband tell Helen that Frank is no good Lawrence knows that Frank is having an affair with the wife of one of his friends, it is clear to Ann that Helen does not believe them.Ann goes to Franks apartment to stop him from taking advantage of Helen. She hides when Lawrence shows up unexpectedly. He warns Frank to leave town before Lawrences friend catches up with him and shoots him. Frank had already planned to go, but when Lawrence declares that he intends to administer a beating first, Frank draws a gun. He is shot in the ensuing struggle. Lawrence leaves without being seen, unaware that his wife has heard the whole thing. ........

Source: Wikipedia