(written from a Production point of view)
Sharon Acker (born 2 April 1935; age 84) is a Canadian-born actress who played Odona in the Star Trek: The Original Series third season episode "The Mark of Gideon". She filmed her scenes on Wednesday 23 October 1968, and between Monday 28 October 1968 and Wednesday 30 October 1968 at Desilu Stage 9.
Acker was a regular on the soap opera Executive Suite (1976-77), as were fellow Star Trek guest stars Richard Cox, Leigh J. McCloskey, Paul Lambert, Madlyn Rhue, Percy Rodriguez, Mitchell Ryan, and William Smithers. Other television series on which she appeared include Mission: Impossible (featuring Leonard Nimoy and produced by Desilu), Gunsmoke, Marcus Welby, M.D., Barnaby Jones (with Lee Meriwether and Vince Howard), The Rockford Files, and Quincy, M.E. (with Robert Ito and Garry Walberg).
She has also appeared in a number of made-for-TV movies and specials, including 1970's Jeff Corey and Michael Bell; 1973's , co-starring Glenn Corbett and 1974's , with Barbara Luna. In 1980, she appeared in "Galactica Discovers Earth", the three-parter pilot of Galactica 1980, which also featured Richard Lynch, Michael Strong and Erik Holland. The episode was later incorporated into the television movie Conquest of the Earth, which also featured John Colicos. She also has a few films to her credit, most notably 1967's , which co-starred James B. Sikking, Sid Haig, and Michael Bell.(a pilot for a short-lived series on which she starred) with