In 1928, aged 22, Epp featured in Endangered Girls (Gefährdete Mädchen), a 1928 Austrian silent drama, directed by Hans Otto Löwenstein and starring Max Landa, Cilly Feindt and Hermine Sterler.
[1] Epp occasionally directed the Deutsches Volkstheater (alongside director Walter Bruno Iltz), where he also appeared as Christopher in 1938 in Johann Nestroy's Einen Jux will er sich machen.
From 1939 to 1941 Epp became partners with Rudolf Haybach, the head of The "Comedy", a theatre group based in Johannesgasse 4 (later renamed the Metro cinema).
The "Comedy" opened in February 1940 with Heinrich Zerkaulen's The Rider under Epps' direction; he also portrayed Rudolf II, "one of the most interesting and impressive theatre evenings of the season" (Weltbild).
City Council member Viktor Matejka granted the concession and the theatre, renamed by Epp to "Die Insel in der Komödie", opened on 18 October 1945 with Uncle Vanya by Anton Chekhov.
[5] Some of the premieres caused quite a stir, such as the staging of Jean-Paul Sartre's The Dirty Hands (1954/55), which the author tried to prevent with a trip to Vienna, because, in his opinion, it was outdated.
The press discussed the Volkstheater's "blockade breakers" premiere on 23 February 1963, with Dorothea Neff and directed by Gustav Manker, who also appeared in The Caucasian Chalk Circle.
featuring actors Karl Skraup, Hans Putz, Hugo Gottschlich, Fritz Muliar, Walter Kohut, Kurt Sowinetz and Hilde Sochor.
Guest appearances were offered by Kathe Dorsch as Elisabeth of England, Marianne Hoppe in Strindberg's Dream Play and Hilde Krahl as Lady Macbeth and Libussa.