
After serving a prison sentence for no fault of her own, café violinist Helene seeks out her twin sister Betty, a famous revue star in Vienna engaged to a public prosecutor. During a sailing trip, Betty accidentally drowns. Helene, at first involuntarily, then consciously, assumes her sister’s identity. Blackmail by two criminals soon follows.
Betty Gall, Revuestar + Helene Gall, Kaffeehausgeigerin
Dr. Hans Hellwig, Staatsanwalt
Anna, Wirtschafterin bei Betty Gall
Semmelweich, Verbrecher

Brillanten-Emil, Verbrecher
Baron Hayduk
Waraschitz, Inspizient
Anita Roller, Schauspielerin
Gefängnisdirektor
Janos, Bootswärter