Dewey Wilson climbs the bridge barehanded. When he speaks with the steelworker at the top of the bridge, he is at first still barehanded then suddenly is wearing black gloves.
Moments before the first murder, the killers stalk their victim (using the "night vision" effect) and pass behind a parked car, revealing the reflection of a bright sunny day in the rear hood of the car when it is supposedly taking place at night.
In the opening scene with Edward James Olmos (Eddie Holt) on top of the bridge, the camera pans to reveal the film crew kneeing in the background for several seconds.
When the doctor is riding his motorbike through the tunnel and spots the wolf, he is mouthing "Help me," repeatedly, but we don't hear his voice. At the end, he says, "Oh my god," but is still mouthing, "Help me."