The Narrow Path (1918)

Marion Clark, a manicurist, is unimpressed by the wealthy but dissipated men who frequent her shop, preferring city editor Dick Strong, who lives in her boardinghouse. Dick's sister Gladys, however, is intrigued by the wilder side of life in New York and allows one of the boarders to take her to a lively party. There Gladys meets and becomes infatuated with Malcolm Dunn, a dissolute businessman who neglects his wife Margaret. When Gladys realizes that she is pregnant, she turns to Marion for advice. Outraged, Marion sends for Malcolm, not knowing that his wife has hired detectives to follow him. The detectives find Malcolm in Marion's apartment, and Margaret sues him for divorce, naming Marion as the correspondent. In order to protect Gladys, Marion remains silent, but in the end, the truth is revealed, and Marion wins Dick.