Posted by Detectives spent three years working on the investigation, which ultimately found that Michael Skakel had “in all probability killed” Moxley, according to Dunne’s characterization. The detectives hired the 24-year-old who ultimately met with Dunne to turn the investigation into a narrative. Rushton Skakel stashed the report away, according to Dunne.
https://www.businessinsider.com/how-dominick-dunne-revived-interest-in-martha-moxley-2013-10
http://thesuttonreport.com/The%20Sutton%20Report/searchablesutton.html