The Woman in Room 13 (1920)

Laura Bruce is married to John Bruce, police commissioner. She discovers her husband is enjoying a drunken revel with another woman, and vows she will obtain a divorce. After doing so she weds Paul Ramsey. His employer, Dick Turner, a libertine, offers his a responsible position in the west, and she faces a long separation. Ramsey later learns that Turner is interested in his wife and engages a man to protect her, who happens to be her former husband.