>> then a revelation. the dead man had a dangerous dream. >> he ended up finding a loft paperwork related to the oil business. >> i remember him telling us i'm going make millions of dollars. >> a big money venture oozing with outlaws. >> a violent individual. been to prison for robbery. big man. probably 250 pounds of steroided rock muscle. significant criminal history. >> greed is what killed my dad. greed is what caused all of this. >> a thirst for oil. a lust for blood. >> i trusted a con artist. i trusted a sociopath. >> wild, isn't it, what can happen to a quiet little prairie town when oil comes along. >> yeah. >> among the green and pleasant