Albert Bassermann

as Dr. Konrad Bienert, Landgerichtsrat

Gustav Fröhlich

as Fritz Bernt, Student

Hans Brausewetter

as Walter Bienert, Beinerts Sohn, Student

Oskar Sima

as Karl Zülke, Portier

Heinrich Gretler

as Kurt Brann, sein Untermieter

Julius Falkenstein

as Anatol Scherr, ein Hausbewohner

Gerhard Bienert

as Baumann, Kriminalkommissar

Charlotte Ander

as Gerda Bienert - Bienerts Tochter

Annie Markart

as Erna Kabisch

Edith Meinhard

as Mella Ziehr

Hermann Speelmans

as Bruno Klatte, Artist

Jakob Tiedtke

as Ein genierter Herr

Heinz Berghaus

as Schneider, Kriminalbeamter

Carl Lambertin

as Kriebel, Kiminalbeamter

Emilia Unda

Erwin Splettstößer

as Polizist