The Wandering Image (1920)

When Irmgard becomes pregnant of Georg, a free love disciple, she decides, for the sake of her child, to pretend they are married. The secret plan is to wed his twin brother, John, who will pretend to be Georg in front of the priest. Soon after that happens, Georg disappears and is declared dead. Years later Irmgard is trying to escape John, who is obsessed with her. In the mountains she finds a stranger willing to protect her.