I have distinct memory of a Star Trek episode no one remembers! It is about Spock and Kirk going down to a dying planet with ruins around a dying star that comes to life as a person on the planet (Celia Lovsky). She is angry her children are being attacked and have run under the surface. She rocks the planet and has anger bouts till she understands her children went underground 11,000 years ago, and died off... She then lets the Captain and Mister Spock go after realizing she sees time differently than her children that had died in her transformation.
Never seen it again, and never heard of anyone having it ever again. It was in the mid 1960's when I saw it on TV and I live in Quebec Canada if that helps. Her face, the dialogue, the set... I remember all of it but no one else does! Was it lost? Destroyed? Rejected and exist somewhere in some safe? I have no clue why I remember a whole episode no one else does.