Credits · 54
To Die in Paris
FilmTo Die in Paris
1968 · General Ludmer
FilmThe Spy in the Green Hat
1967 · Dr. Heinrich von Kronen
FilmToo Many Thieves
1966 · Bulanerti
FilmTorn Curtain
1966 · Gustav Lindt
Branded
1965
The Fugitive
1963 · Dr. Josef Karac
The Merv Griffin Show
1962 · Self
Ben Casey
1961
Cain's Hundred
1961 · Hans Saltzman
The Twilight Zone
1959 · Ernst Ganz
FilmJudgment at Nuremberg
1959 · Dr. Wickert
Naked City
1958 · Owner of Pawnshop
Decoy
1957 · Fred
Playhouse 90
1956 · Dr. Wickert
Matinee Theater
1955
FilmThe Veils of Bagdad
1953 · Kaffar
FilmSins of Jezebel
1953 · Naboth
FilmMy Pal Gus
1952 · Karl
Omnibus
1952
Hallmark Hall of Fame
1951 · Joseph
FilmJourney Into Light
1951 · 'Doc' Thorssen
FilmSirocco
1951 · Flophouse Proprietor
FilmThe Great Caruso
1951 · Alfredo Brazzi
FilmMystery Submarine
1950 · Adolph Guernitz
FilmThe Killer That Stalked New York
1950 · Dr. Cooper
FilmThere's a Girl in My Heart
1949 · Professor Joseph Kroner
FilmJolson Sings Again
1949 · Cantor Yoelson
FilmThe Great Sinner
1949 · Doctor
FilmThe Lovable Cheat
1949 · Violette
FilmThe Fighting O'Flynn
1949 · Hendrigg
Studio One
1948
FilmSealed Verdict
1948 · Jakob Meyersohn
FilmTo the Ends of the Earth
1948 · Nicholas Sokim
FilmCigarette Girl
1947 · Otto
FilmThe Return of Monte Cristo
1946 · Judge Lafitte
FilmBlondie Knows Best
1946 · Dr. Titus
FilmThe Jolson Story
1946 · Cantor Yoelson
FilmRenegades
1946 · Jackorski
FilmThe Devil's Mask
1946 · Dr. Karger
FilmGilda
1946 · German Cartel Member
FilmPrison Ship
1945 · Professor
FilmCounter-Attack
1945 · Mueller
FilmThe Master Race
1944 · Schmidt (as Louis Donath)
FilmThe Hitler Gang
1944 · Gustav von Kahr
FilmThe Strange Death of Adolf Hitler
1943 · Adolf Hitler / Franz Huber
FilmAbove Suspicion
1943 · Gestapo Officer in Schultz's Laboratory (Uncredited)
FilmThis Land Is Mine
1943 · German Captain
FilmHangmen Also Die!
1943 · Schirmer
FilmMargin for Error
1943 · Hitler's Voice
FilmReunion in France
1942 · Desk Clerk in Hotel (uncredited)
FilmLady from Chungking
1942 · Hans Gruber
FilmThe Secret Code
1942 · Nazi Prof. Metzger
FilmGirls to Marry
1932
FilmTheodor Herzl, Standard-Bearer of the Jewish People
1921 · Prinz Eugen