and bob durst eyes were not blue.that person into the midst of an investigation that may or may not have anything to do with them. >> but the investigation continues. and some [inaudible] believe there may be more. >> i never said definitively that he was a serial killer. what i said was that there is so much out there about him that clearly there's something going on here. and that law enforcement needs to look into it, and thankfully they are doing it now. >> at least [inaudible] said dick deguerin. >> there is no evidence, and to think that to have a theory that he's some kind of a serial killer and when he's not a syrup ill, or. >> but the notion of robert durst's serial killer has come up. >> it sells magazines, it sells books. it tells people to turn the tv. >> a dismembered neighbor, a friend. this is how -- thirst is defined now. where did it all go long? >> that's all for this edition of dateline. i'm natalie morales. thanks for watching.