In an interview shortly after the movie was released, Betsy Rue, who plays Irene, the girl who has sex with the truck driver in the motel, said it was her idea to end up running through the parking lot stark naked. It was also her first nude scene. According to her, after she was cast "they wanted to make sure that I was going to be comfortable with everything before I did it, so I knew what it entailed before I went in and actually, the end product was a lot more than they expected. When you're watching the movie, if you look at the part where I take the gun out of the purse, before I come out into the parking lot, I grab a sheet off the bed. We did this many times with the sheet, and it just wasn't working, so I said, 'Forget the sheet, I am leaving the sheet behind.' So that's how I ended up getting so much more nude. I said, 'Forget it, if you want this, I'm going to go balls to the walls and here it is.'" She added "Because, as an actor, I just felt a lot better forgetting the sheet. I felt like it was more real. I felt like I was in my reality. I was, like, 'I would not be worrying about this stupid sheet right now! I just want the tape back.'"
In a 2012 interview, Betsy Rue was asked if she regretted filming the extended scene where she's running around the motel parking lot totally naked. She said "No regrets. It was amazing, and I think that I would've had some regrets, but the reviews were so fun from it. The Hollywood Reporter and Variety wrote up some amazing reviews, and that made me feel really good. That was the whole point of what I wanted to do, like, 'OK, I'm going to be naked, so I better be good instead of just being naked.' I wanted the audience to forget about the fact that I was naked running around the parking lot getting killed and actually have them be scared for me, and from the reviews and the feedback that I got I think I got there. That was my main concern. I don't want to be this naked chick running around just for the sake of running around naked, because we all know that's what happens in horror movies. Yeah, I was the naked girl, but for my sake I hope that I brought a little more to it than just being a screaming naked girl."
The first R-rated film in the USA projected in Real D technology.
A flyer on a wall indicates that Valentine's Day is Saturday, February 14th. That would mean the previous day is Friday the 13th.
The film was shot in Pennsylvania, because it allowed the production crew to take advantage of the state's tax incentives for filmmaking.