Der Andere is a play by Paul Lindau, which was filmed several times, including in 1913 as The Other by Max Mack, in 1930 as The Other[1] and The Prosecutor Hallers[2] by Robert Wiene and in 1933 as The Haller Case by Alessandro Blasetti.
Staatsanwalt Hallers, a highly feared prosecuting attorney, leads a double life, moonlighting as a criminal. Analie Frieben finds out about his secret, but because of her unsavoury past she is in no position to betray it. Hallers' own ego eventually proves his downfall.