Testament is a 1983 American post-apocalyptic drama film co-produced and directed by Lynne Littman, written by John Sacret Young, and starring Jane Alexander, William Devane, Leon Ames, Ross Harris, Lukas Haas, Roxana Zal, Kevin Costner, and Rebecca De Mornay. Based on Carol Amen's 1981 short story "The Last Testament", the film focuses on the disintegration of a small suburban community in the San Francisco Bay Area after nuclear war destroys outside civilization. It was one of the first films, along with The Day After and Threads, that portrayed life after a nuclear war, mostly in response to an increase in hostility between the United States and the Soviet Union.