Bug is a 2006 American horror/thriller directed by William Friedkin, and starring Ashley Judd, Michael Shannon and Harry Connick, Jr..
The film is based on the play of the same name written by Tracy Letts.
Agnes White (Judd) is a waitress living in a run-down motel in rural Oklahoma. Unable to move on from the disappearance of her son some years previously, she engages in drug and alcohol binges with her lesbian friend, R.C. (Lynn Collins). Her abusive ex-husband, Jerry Goss (Connick), has recently been released from prison and she is receiving silent telephone calls which she suspects are from him. R.C. introduces Agnes to Peter Evans (Shannon), a drifter who says he is a recently discharged soldier. Agnes and Peter reach out to each other out of loneliness, and start a relationship.
The line between reality and delusion is blurred as they discover a bug infestation.
Peter is, in fact, mentally ill, and believes he was the subject of biological tests by the U.S. government while he was in the military. He starts to draw Agnes into his delusions, persuading her that the silent telephone calls are the government trying to track him down and when he starts seeing bugs in the motel
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