Credits—from the IMDb:
[list]
[*] screenplay by Milton Subotsky
[*] additional material by David Whitaker (uncredited) [we list him as providing additional contributions, since that’s how he was credited for the next film]
[*] directed by Gordon Flemying
[*] from the B.B.C. Television serial by Terry Nation [we list him as a creator]
[*] original concept by Sydney Newman (uncredited) [we list him as a creator]
[/list]
