The morning after the first murder, Greg steps out of his small travel trailer, which is parked directly in front of a tall brick house with a chimney. His face is covered in blood and he begins complaining to a female production assistant. The camera cuts to a closeup of him ranting and raving, and the house is no longer behind his trailer. His trailer now parked in front of a field containing several trees.
Shortly after the start of the movie, Mike enters the bar, complaining about how bad the rain is outside. His black leather jacket is soaked, yet his hair is dry and neatly combed. If he'd been walking in the rain for as long as it's shown, his hair should be wet.