She is best known for her appearances in The Twilight Zone's "Dead Man's Shoes", and Star Trek's "Court Martial" along with Homicidal (1961) She was born Joan Schrepferman[2] on June 6, 1931[1] in Chicago, where she was raised.

When she was 17, she had polio that paralyzed her face, neck, spine, and vocal cords, leaving her temporarily unable to speak.

After appearing as a dancer in The Chicago Kid (1945) and in a part in the television series Have Gun – Will Travel playing Sheriff Quinn's daughter Molly in S1 E26 "Birds of a Feather" (1958), she moved to California around 1959.

During the 1960s, Marshall frequently guest-starred on various television series, including Tales of Wells Fargo, Maverick, Surfside 6, Hawaiian Eye, Gunsmoke, and The Jack Benny Program.

She appeared in the films Homicidal (using the stage name Jean Arless) and Tammy and the Doctor opposite Sandra Dee and Peter Fonda.