The Net (1923)

Allayne Norman's husband, Bruce, a gambler and a drinker, quarrels with her cousin, an artist, and kills him. Bruce flees, having exchanged identities with a stranger who, suffering from amnesia, wanders into the studio and falls unconscious. He persuades Allayne to tell the police that the senseless man is her husband, the murderer. She does, to protect her son. Bruce dies, the man regains his memory, his innocence is proven, and he marries Allayne.