What was the nationality of the person who wrote the original screenplay for "Screamers"?
Screamers (1995 film):  The screenplay, written by Dan O'Bannon with a rewrite by Miguel Tejada-Flores, is based on Philip K. Dick's short story "Second Variety", and addresses themes commonly found in that author's work: societal conflict, confusion of reality and illusion, and machines turning upon their creators. Dan O'Bannon: Daniel Thomas "Dan" O'Bannon (September 30, 1946 – December 17, 2009) was an American film screenwriter, director, visual effects supervisor, and occasional actor, usually in the science fiction and horror genres.
American