Salka Viertel was known for Viertel's creative screenwriting skills. Early in Viertel's screenwriting career, Viertel penned scripts for the Greta Garbo period drama "Queen Christina" (1933) and the Greta Garbo dramatic adaptation "Anna Karenina" (1935). Viertel proceeded with Viertel's career by moving on to write movie scripts for the biopic "Conquest" (1937) with Greta Garbo, "Two-Faced Woman" (1941) with Greta Garbo and the drama "Deep Valley" (1947) with Ida Lupino. Viertel also appeared in "The Loves of Three Queens" (1954) starring Hedy Lamarr. Later in Viertel's career, Viertel appeared on the Bertolt Brecht documentary "My Name Is Bertolt Brecht - Exile in U.S.A." (1988).