The Phone Message (1916)

When Dr. Carson marries Daphne Standing among the guests is her former suitor, Laurelton. The couple are happy but as Laurelton's jealousy grows, he gets drunk and decides to have his way with Daphne. He leaves an urgent phone message for Carson to hurry to his office because of an accident. Watching him depart Laurelton tries to enter the apartment but Daphne takes refuge in a locked room calling Carson who rushes home and finds Laurelton trying to break into his wife's room. They fight until the police intervene but when Carson opens her door Daphne, believing he is Laurelton, shoots him. His injury is minor, and the officers take Laurelton in charge.