First, Poland-born starlet Pola Negri is "Sappho," a promiscuous woman who drives her engineer lover (Alfred Abel) to the bughouse over her chronic infidelities. Richly psychological German silent co-stars Johannes Riemann, Helga Molander. Next, "Backstairs" offers a fine example of German Expressionist cinema, telling the story of a maid who waits anxiously, day after day, for a letter from her missing lover. With Henry Porten and Fritz Kortner. 132 min. total. Standard; Soundtrack: music score. Silent with music score.