Mari Aldon, a former ballet dancer, embarked on a new path in life when she married Hollywood director Tay Garnett, who nurtured her passion for acting. Garnett's encouragement played a significant role in Aldon's decision to pursue a career in film, although her impact on the industry was not profound. However, her portrayal of Judy Beckett, a prisoner of the Seminoles and the charming romantic interest of Gary Cooper's character, in the 1951 film Distant Drums stands out as a notable exception.
Aside from this role, Aldon's appearances in feature films were limited to brief cameos in two major movies, Joseph L. Mankiewicz's The Barefoot Contessa in 1954 and David Lean's Summer Vacation in 1955. The majority of her career was dedicated to television, where she continued to hone her craft and leave a lasting impression on the small screen.