The version of the documentary included on Disc 9 of the Alien Quadrilogy box set is in fact a shortened and re-edited version from the original Channel 4 broadcast version. This version runs for 64 minutes and is exclusively about
Alien (1979), eliminating all material concerning
Aliens (1986),
Alien³ (1992) and
Alien: Resurrection (1997), and extending some of the interviews about Alien.
Mark Kermode is also absent from the Quadrilogy version, other than a piece of voice-over narration at the start of the documentary