On its way back to Earth, a commercial spacecraft is re-routed to a remote planet to investigate a distress call. When a member of the landing party returns to the ship as the unwilling host of a seemingly indestructible extraterrestrial creature that bleeds acid, the crew must destroy the alien before it kills them all. Tom Skerritt, Sigourney Weaver, Ian Holm, Veronica Cartwright, Harry Dean Stanton, Yaphet Kotto, and John Hurt star in Ridley Scott's classic mix of horror and sci-fi. Theatrical version; 116 min./Director's cut; 116 min. Widescreen; Soundtracks: English DTS HD 5.1 Master Audio, Dolby Digital 4.1, Dolby Digital Surround, French DTS 5.1, Spanish Dolby Digital 5.1, Portuguese Dolby Digital 5.1; Subtitles: English (SDH), French, Spanish, Portuguese; audio commentary Scott, others; deleted scenes; extended scene; isolated music score.