Although Pola Negri did her own singing in the cabaret scenes, the higher (soprano) lines in the operetta scenes were dubbed by Hilde Seipp.
The first three credits shown, one at a time, are for the writer, the composer, and the photographer. Only then are credits shown for the actors. A very unusual tribute to creativity!
The IMDb staff came together to round up their favorite crime movies, shows, and documentaries. Find new streaming leads or revisit some of the usual suspects.