I really don't think we'll ever know, or are supposed to know, I think it's just a huge missing plot point in the movie FFC was too lazy to clean up.
-In my HOME!!! In my BEDROOM WHERE MY WIFE SLEEPS!! Where my children come and play with their toys. In my home.
-My father taught me many things here -- he taught me in this room. He taught me -- keep your friends close, but your enemies closer.
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