On this day in the Star Trek universe:

Star Trek (1969)

Star Trek

Season 3. Episode 24.

Episode entitled: Turnabout Intruder.

Released June 3, 1969.

Directed by Marvin J. Chomsky.

Written by Jean Lisette Aroeste, Arthur H. Singer.

Created by Gene Roddenberry.

Music by Alexander Courage.

Cast: William Shatner, Leonard Nimoy, DeForest Kelley, James Doohan, George Takei, Walter Koenig, Nichelle Nichols, Majel Barrett, Mariette Hartley, Ian Wolfe, Kermit Murdock, Ed Bakey, Anna Karen, Albert Cavens, Stan Barrett, Johnny Haymer.