Did Jon Benet's 'Killer' Start a Sex Cult with Child Bride or Is He Just a Creep? Maureen O'Connor · 06/02/10 02:25PM A 19-year-old girl is working the media circuit claiming that Jon Benet murder suspect John Mark Karr had a sex change operation and now leads a sex cult dedicated to diddling five-year-old girls called "The Immaculates."