Between these appearances in Doctor Who, she auditioned for the role of on the American primetime soap , a of the American prime time soap opera.
It was in the year 2005 when she was cast in the film The Californians.
In the former, she had an erotically charged scene with , in which O'Mara was meant to be seduced; the two women were left laughing on set, however, as Pitt's fangs kept falling into O'Mara's cleavage.
Her earliest television appearances, in the 1960s, included guest roles in , , , and.
Kate Mara Plastic Surgery Before and After Botox and Facelift The evidence of Kate Mara plastic surgery for botox and facelift seen in her before and after pictures.
In 2012, O'Mara appeared in a theater adaptation of Agatha Christie's.
O'Mara continued to make television appearances throughout the 1990s, including 1990 , and playing Jackie Stone Patsy's older sister in two episodes of 1995—2003.
On television, she had regular roles in 1975—1976 , 1981—1982 and 1989—1990 , and portrayed villain three times 1985—1993.