to biological testing by the U.S. government, that the anonymous phone calls were made by government agents in anticipation of his arrival, and that the room has become infested by bugs planted by the government as part of the experiments. Peter's movements and behavior become more erratic as he fights the "invisible" bugs, that he claims are infesting his body. Over time, Agnes begins to share in his behavior. R.C., who has taken Agnes to visit a dermatologist, is convinced there are no bugs in the motel room. Agnes has also reported to the motel owner that their room has bugs but says he told her none of the other rooms have a bug problem. Peter is furious over these developments. R.C. tries to convince Agnes to leave Peter, mentioning that a man named Dr. Sweet is looking for him. But, after Peter has an episode, Agnes slaps R.C. and tells her to leave. Peter and Agnes isolate themselves, closing the room, covering it with flypaper and aluminum foil to fend off communications, and lighting it with the glow from bug zappers. Peter, believing that a colony of microscopic bug egg-sacs was implanted in one of his teeth, tears the tooth out with pliers. After examining the tooth using a child's microscope, he believes he sees the bugs in the remains of the crushed tooth, as does Agnes. Peter is progressively more obsessed with using the microscope, believing that the bugs are living in and eating his blood. Dr. Sweet arrives at the motel with Jerry. After Jerry bursts in, Sweet sends him outside. Sweet tells Agnes that Peter escaped from a mental institution where he was undergoing treatment and that delusions about insects are a known symptom of Peter's mental illness. Agnes distrusts Sweet, who goes on to claim that he knows where Lloyd is and that the bugs are in fact real. Sweet attempts to convince her that he can help Agnes and Peter escape from the conspiracy. Peter appears from the bedroom wielding a knife. As he argues with Sweet, Sweet unobtrusively readies a syringe, preparing to sedate Peter, but Peter stabs and savagely kills Sweet. Agnes is distraught believing that Peter has destroyed her chance of learning more about her son, but Peter insists Sweet was not even human, merely a 'robot' sent by the government. Together, Peter and Agnes elaborate upon Peter's beliefs in an