. >> my name is ronald luff. that's r-o-n-a-l-d. my name is last name is luff.. >> let me ask you now, did you voluntarily come down to our office today? >> yes, i did. >> did you voluntarily come in to give a statement about a matter up in kirtland, ohio? >> yes. >> okay. >> how does a seemingly normal man turn into a mass murderer? >> he came in and mentioned are you in or are you out? so then he says, well, i want them brought out to the barn, from oldest to youngest. >> what would drive him to aid in the killing of an entire family? >> and i was the one that brought them out. >> it's important to interview people like luff for many reasons. seemingly normal fellow, coming from the midwest to love's garden country, a married man who, you know, in his young adulthood gets sucked into a cult. then there's the whole idea house, do you get drawn into a cult anyway? how does someone who seems relatively normal, you know, get sucked in so far that they're willing to commit violent murders? >> maybe it would be easy to go backwards and find out a little bit about yo