Star Trek: The Original Series/The City on the Edge of Forever
The City on the Edge of Forever is the twenty-eighth episode of the first season of Star Trek: The Original Series, and the twenty-eighth episode overall.
Guest Star: Joan Collins (Sister Edith Keeler)
Also Starring: DeForest Kelley (Dr. McCoy)
Featuring: James Doohan (Scott), George Takei (Sulu), Nichelle Nichols (Uhura), John Harmon (Rodent), Hal Baylor (Policeman), David L. Ross (Lt. Galloway), John Winston (Transporter Chief), Bartell La Rue (Guardian Voice),
Kirk and Spock go back in time to restore history.