Michael Farraday (Jeff Bridges), a widowed father still struggling to get over the death of his FBI agent wife, accidentally becomes friends with the family across the road when he rescues their young son after an accident. But Michael soon starts to feel uneasy about Oliver (Tim Robbins) and wife Cheryl (Joan Cusack) despite their hospitality, seizing on minor anomalies and evasions to fuel his suspicions. Convinced that Oliver is actually an anti-Goverment terrorist, Michael decides to mount his own investigation, knowing that if he's wrong, he could just be losing his mind. Gripping tale of suburban paranoia.