 He was sometimes credited as Louis Van Rooten.Known for his villainous roles, he played Nazi ringleader Heinrich Himmler in "The Hitler Gang" (1944) and "Operation Eichmann" (1961).He played supporting roles with a number of film stars, including Alan Ladd in "Two Years Before the Mast" (1946) and "Beyond Glory" (1948), Charles Laughton in "The Big Clock" (1948), Veronica Lake in "Saigon" (1948), Edward G. Robinson in "Night Has a Thousand Eyes" (1948), and Kirk Douglas in "Detective Story" (1951).