Bug is a 2006 psychological horror film directed by William Friedkin, and starring Ashley Judd, Michael Shannon, Lynn Collins, BrÃan F. O'Byrne, and Harry Connick Jr. The screenplay by Tracy Letts is based on his 1996 play of the same name in which a woman holed up in a rural Oklahoma motel becomes involved with a paranoid man who suffers from delusional parasitosis and is obsessed with conspiracy theories. The film debuted at the 2006 Cannes Film Festival before being purchased by Lionsgate, who released the film the following year in May 2007.
Friedkin and Letts similarly collaborated on the 2011 film Killer Joe.