When commercial towing vehicle Nostromo, heading back to Earth, intercepts an SoS signal from a nearby planet, the crew are under obligation to investigate. After a bad landing on the planet, some crew members leave the ship to explore the area. At the same time as they discover a hive colony of some unknown creature, the ship's computer deciphers the message to be a warning, not a call for help. When one of the eggs is disturbed, the crew do not know the danger they are in until it is too late.

Summary written by Graeme Roy
Directed by
Ridley Scott

Cast (in credits order) verified as complete
Tom Skerritt .... Dallas - Captain of the Nostromo
Sigourney Weaver .... Ellen Ripley
Veronica Cartwright .... Lambert
Harry Dean Stanton .... Brett
John Hurt .... Kane
Ian Holm .... Ash
Yaphet Kotto .... Parker
Bolaji Badejo .... The Alien
Helen Horton .... Mother

Written by (in credits order)
Ronald Shusett(story)
Dan O'Bannon
David Giler
Walter Hill

Cinematography by
Derek Vanlint

Music by
Jerry Goldsmith
Howard Hanson(from "2. symphony")
Wolfgang Amadeus Mozart (from "Eine kleine Nachtmusik")
Lionel Newman

Production Design by
Roger Christian
Leslie Dilley
Anton Furst
Michael Seymour

Costume Design by
John Mollo

Film Editing by
Terry Rawlings
Peter Weatherley

Produced by
Gordon Carroll
David Giler
Walter Hill
Ivor Powell(associate)

Ridley Scott Sci-Fi Classic Films