The City on the Edge of Forever

"The City on the Edge of Forever" is the 28th episode of the American science fiction television series Star Trek, and the penultimate episode of the first season. It was first broadcast in the United States on NBC on April 6, 1967. Set in the 23rd century, the series follows the adventures of Captain James T. Kirk (William Shatner) and his crew aboard the Starfleet starship USS Enterprise. In this episode, after Doctor Leonard McCoy (DeForest Kelley) travels back in time and changes history, Kirk and Spock (Leonard Nimoy) follow him to correct the timeline. In doing so, Kirk falls in love with Edith Keeler (Joan Collins), but realizes that in order to save his future, he must allow her to die.

The City on the Edge of Forever

"The City on the Edge of Forever" is the 28th episode of the American science fiction television series Star Trek, and the penultimate episode of the first season. It was first broadcast in the United States on NBC on April 6, 1967. Set in the 23rd century, the series follows the adventures of Captain James T. Kirk (William Shatner) and his crew aboard the Starfleet starship USS Enterprise. In this episode, after Doctor Leonard McCoy (DeForest Kelley) travels back in time and changes history, Kirk and Spock (Leonard Nimoy) follow him to correct the timeline. In doing so, Kirk falls in love with Edith Keeler (Joan Collins), but realizes that in order to save his future, he must allow her to die.