25th episode of the second season of Star Trek: The Original Series

1974 film by Ralph Senensky

television program

1978 film

episode of Star Trek: The Original Series (S3 E5)

9th episode of the second season of Star Trek: The Original Series

13th episode of the second season of Star Trek: The Original Series

American television series

episode of The Twilight Zone (1959 TV series)

episode of Star Trek: The Original Series (S2 E20)

television series

1978 television film directed by Ralph Senensky

episode of Star Trek: The Original Series (S3 E9)

24th episode of the first season of Star Trek: The Original Series