Predator is a 1987 American science fiction action horror film directed by John McTiernan and written by brothers Jim and John Thomas. It stars Arnold Schwarzenegger as the leader of an elite paramilitary rescue team on a mission to save hostages in guerrilla-held territory in an unspecified country in Central America.[notes 1] Kevin Peter Hall co-stars as the titular antagonist, a technologically advanced form of extra-terrestrial life secretly stalking and hunting the team. Predator was written in 1985, under the working title of Hunter. Filming began April 1986 and creature effects were devised by Stan Winston.