Ladies of the German cinema

"Backstairs: In this early German expressionist film a young woman's love is thwarted by a postman consumed with jealousy who intercepts her beloved's letters to her and who finally slays him. Devastated, she hurls herself from a building and kills herself."@en
"Sappho: The engineer Georg de la Croix suffers a nervous breakdown due to the continuous unfaithfulness of his lover, Dame Sappho. Georg ends up in a lunatic asylum. His brother, Richard wants to avenge him but instead falls in love with the beautiful Dame Sappho. When Herr Richard finds out from a previous lover of Dame Sappho that she was the cause of his brother's insanity, Richard decides to put an end to his affair with her by marrying someone else but he still must see Dame Sappho, even minutes after the wedding. The love turmoil will have a "grand finale" at the end of the film in a magnificent and thrilling scene at the Opera where our heroine will pay for her old and new love sins."@en