Alien is a 1979 science-fiction horror film directed by Ridley Scott, and starring Tom Skerritt, Sigourney Weaver, Veronica Cartwright, Harry Dean Stanton, John Hurt, Ian Holm and Yaphet Kotto. The film's title refers to a highly aggressive extraterrestrial creature that stalks and kills the crew of a spaceship. Dan O'Bannon wrote the screenplay from a story he wrote with Ronald Shusett, drawing influence from previous works of science fiction and horror. The film was produced by Gordon Carroll, David Giler and Walter Hill through their Brandywine Productions and distributed by 20th Century Fox. Giler and Hill made revisions and additions to the script. Shusett was executive producer. The eponymous Alien and its accompanying elements were designed by Swiss surrealist artist H. R. Giger, while concept artists Ron Cobb and Chris Foss designed the human aspects of the film. Alien was the first film produced in the Alien franchise and is the second chronologically in the narratives, following Prometheus.