Otto Hartmann was an Austrian actor and Gestapo informer.
The Vagrant
1930
A Devil of a Fellow
1935
Bright Eyes
1929
Suburban Cabaret
Madame Bluebeard
1931
The Case of Colonel Redl
Der weiße Traum
1943
Stormy Night
Singende Jugend
1936
Burg Theatre
Three on a Honeymoon
1939
Vater Radetzky
