that was the question facing detectives after the manager of a multimillion dollar farm was killed in an explosion. the moore family had been rooted on their land for generations. but an investigation revealed volatile relationships and a deep seeded family feud that had been simmering for decades. now, police wanted to know, were the rumors just town gossip? or did jealousy lead to murder? here s keith morrison. reporter: there is an eden in the american west. a wide, flat earthen cornicopia, whose bounty fills the belly of millions. great farms employ legions of workers and enrich with the profits families that pass the land down. father to son. generation after generation. they live modestly here in california s central valley. multimillionaires and crop dusters and battered pick-up