In what states were eleven people murdered by the American teenaged spree killer whose murder spree the film Badlands is based on?
Badlands (film):  The story, though fictional, is loosely based on the real-life murder spree of Charles Starkweather and his girlfriend, Caril Ann Fugate, in 1958, though that basis was not acknowledged when the film was released. Charles Starkweather: Charles Raymond "Charlie" Starkweather (November 24, 1938 – June 25, 1959) was an American teenaged spree killer who murdered eleven people in the states of Nebraska and Wyoming in a two-month murder spree between December 1957 and January 1958.
Nebraska and Wyoming