Ex-convict accused of killing family in DC mansion used to WORK for CEO father as a welder 'and got $40,000 ransom from company delivered to home but tortured them all to death anyway'

THIS GUY WAS NOT ALONE!
http://www.dailymail.co.uk/news/article-3094318/Ex-convict-accused-murdering-CEO-family-DC-mansion-used-work-welder.html