(written from a Production point of view)
Jeanne Bal (3 May 1928 – 30 April 1996; age 67) is one of the two actresses who played Nancy Crater in the Star Trek: The Original Series episode "The Man Trap". She filmed her scenes on Friday 24 June 1966, and between Tuesday 28 June 1966 and Thursday 30 June 1966 at Desilu Stage 9 and Stage 10.
Born in Chicago and moved to Santa Monica, California at an early age, Bal starred in the short-lived sitcom Love and Marriage from 1959 through 1960. In 1961, she became a regular on the sitcom Bachelor Father, but left shortly afterwards. Her other television credits include several appearances on Perry Mason, and guest spots on Bonanza, Wagon Train, and I Spy.
She died of breast cancer in Sherman Oaks, California.