and it hit just about every hot button imaginable. in a moment, bobby kennedy jr. who has long maintained his cousin's innocence. first, deborah feyerick on how this all began. >> reporter: the last time 15-year-old martha moxley was seen alive was the night before hallowe'en, october 1975. she went to a party with friends that night and was seen flirting with 17-year-old thomas skakel, nephew to ethel kennedy. she never returned home. the next day moxley's body was found in her yard in greenwich, connecticut, bludgeoned and stabbed to death by a broken golf club that was found near her body. that club was traced back to the skakel home. though no fingerprints up were found. >> it hit her so hard that the golf club broke. and then they took the shaft and they stabbed her with it six of seven times. >> reporter: suspicion immediately fell on thomas skakel, the last person seen with moxley the night of the