The Warrens go on to discuss many of their more documented and interesting cases emphasizing that the spirits are attracted to those who are more sensitive to the paranormal: “like attracts like.” They also give advice to anyone who would like to try their hand at taking psychic photos: make sure not to trespass (nothing illegal), go on a clear night (no rain or fog), and be patient. No special cameras or equipment is necessary, just an open mind and a good flash.