Her son Jonathan Dweck confirmed the sad news that the actress died on May 1 at her home in Coarsegold, California, reported Ace Showbiz.
Grace appeared in eight of thirteen episodes of "Star Trek" first season where there was much sexual tension between her character and William Shatner's Captain James T Kirk. She was then suddenly released from the contract,
However, when the series was reborn as a movie in 1970s, Grace returned to the "Star Trek" franchise, reprising her role as Janice Rand who had received a promotion to Chief Petty Officer in "Star Trek The Motion Picture".
The latest installment of "Star Trek" starring Chris Pine, Zachary Quinto, Zoe Saldana, Simon Pegg and Idris Elba, "Star Trek 3", is set to hit theatres in the US on July 8, 2016.