The character names JJ, Beth and Meg were used in American Dreams series that Will Estes starred in. He portrayed JJ.
NLETS is part of the NCIC system and is still used to teletype between agencies.
"Helter Skelter" is a book written about Charles Manson, the Manson "Family," and the related murders and other crimes by Vincent Bugliosi, the prosecutor for the Tate and LaBianca murders.