The City On The Edge Of Tomorrow is constantly voted as either the best or one of the best TOS episodes ever. And we see a young, classy, sexy and gorgeous looking Joan Collins in it. Collins plays Edith Keller, a social worker in the 1930s, who helps homeless & down on their luck people get food, shelter & work.
In an effort to find Dr. McCoy, Captain Kirk and Spock go through a portal back in time to the year 1930 and meet the lovely Edith. She helps them find small menial work and arranges for a room for the two of them to live in. Spock finds out that if Edith Keller lives, in an alternate reality, she goes on to influence a late entry of the US in World War 2 which leads to a Nazi victory and a very different Earth, one in which there is no Starfleet or Federation. In order to restore the proper timeline Edith Keller must die.
This proves too hard for the emotional Kirk, who has started to fall in love with Edith and she towards him. So when an unsuspecting Edith approaches the path of a speeding truck, Kirk restraints McCoy from saving her life. This means instant death for Edith, a tragedy for one but the proper timeline is restored and things are back to normal.
I really can’t get over how young & beautiful Joan Collins looks. She is 76 years old at present and I have always known her as the middle-aged Dynasty era look. She looks radiant & stunning here.