Her first acting job was for Republic's 1939 serial, "Daredevils of the Red Circle". She helped three carnival acrobats hunt down the escaped convict 39-0-13 who had secretly kidnapped her father and was imersonating him while attempting to destroy the captive man's financial empire as revenge for being sent to prison for embezzlement.
After starring B-westerns like "Three Texas Steers" (1939) and "Cowboys From Texas" (1939) with the Three Mesquiteers she would spend the forties appearing in many diverse films. They ranged from the prehistoric adventure film "One Million B.C." (1940)to comedies like "Topper Returns" (1941) and "Having a Wonderful Crime" (1945).
Landis also wrote a popular book whose title was taken from her most well known film, "Four Jills in a Jeep" (1944). Sadly she would die a few years later.