This project originally began at Artisan Entertainment with producer Dylan Sellers with a different director and cast members, one of them including Tara Reid.
When Kate is on the phone complaining about the water being cut off, the iron overheats. Kate then runs over to it, and the shadow of a crew member is cast on the iron and ironing board, then moves out of sight.
Shelley is working on a cadaver and has surgical gloves on. When she thinks someone is after her they show a close up of her squeezing the surgical knife, with absolutely no gloves on.