SteveandDianneGriggsfromNewJersey,USA,aresiblingsintheirfortieswhobothclaimtohavememoriesoftheirfatherSteveGriggscommittingnumerousactsofmurder,andclaimheisaserialkillerofchildrenandsomeadults.Theynowspendtheirtimeinvestigatingtheirfathertryingtofindproofofwhattheyaresaying,whichcanneitherbeprovednordisprovedbythepolice.