The physician Dr. Deruga is suspected of having poisoned his wife out of greed. She died after naming Deruga, poor and in debt, the sole heir in her will. There are a lot of people willing to testify against him in court, including Marta, the dead woman's best friend. Only his niece Mingo believes him to be innocent and goes out on her own to prove it.
Willy Birgel
Dagny Servaes
Georg Alexander
Käthe Haack
Paul Bildt
Erika von Thellmann
Fritz Odemar
Beppo Brem
Josefine Dora
Edith Meinhard
Geraldine Katt
Claire Winter
Hans Leibelt
Roma Bahn
Oscar Sabo
Willi Schaeffers
Hubert von Meyerinck
Erich Fiedler
Walter Franck
Ernst Karchow
Leo Peukert
Erich Ziegel
Walter Albrecht
Otto Braml
Walter Buhse
Loulou Daenner
Jac Diehl
Peter Erkelenz
Wilhelm Große
Christine Grossmann
Kurt Hagen
Bruno Klockmann
William Leo
Karin Luesebrink
Günther Markert
Otto Marle
Hugo Meissl
Hans Nerking
Alfred Pussert
Louis Ralph
Leo Reiter
Arthur Reppert
Jutta Sabo
Ernst Albert Schaach
Walter Schenk
S.O. Schoening
Wera Schultz
Alfred Stratmann
Tommy Thomas
Bruno Tillessen
Egon Vogel
Jens von Hagen
Walter Werner