Tom Wopat previously worked with Patricia Richardson in two Quell'uragano di papà (1991) episodes: Jill's Passion (1997) and Taking Jill for Granite (1998).
The revolver Clint Thorne wields is the same physical gun that was used in Saw (2004).
After the tree shooting scene and the person is unloading a rifle, blank cartridge cases are shown. The blank cases have a brass tube where the bullet would have been and the cartridge is used for making noise only.