>> i don't know it's just a thrill. there's something exciting about getting scared. it it boosts your adrenaline and you were screaming because you know it's not real. john: we found only one person who did not like it. >> why did you come here tonight? >> i don't know. i wish i never did. it's the scariest experience of my life. john: c. was the exception. most people like it, this place where you were? margee: people who are going to haunted house probably know they're going to enjoy it and want that type of experience. john: when you call it a haunted house you don't really think it's haunted. margee: i have the study at scare house and we measure people before, during and after they go through this experience to see how it changes them. john: would e-learning? margee: for those who do choose that it's benefiting them.