abstract:The Ninth Configuration, (also known as Twinkle, Twinkle, "Killer" Kane) is a 1980 American film directed by William Peter Blatty. The film is based on Blatty's novel, The Ninth Configuration (1978) which was itself a reworking of an earlier version of the novel, first published in 1966 as Twinkle, Twinkle, "Killer" Kane!