and in 2010, this was where lou castro's house full lived. is fiance and their daughter; emily was there too and other commune members. based on information sara's boyfriend daniel had supplied to the three determined investigators, the fbi was now bird-dogging the property. but inside, emily and the other occupants were oblivious. so tennessee. the house looks very nice. you weren't happy about leaving your -- your classmates and your life in wichita, but were you pleased at what the prospects were for you in tennessee? >> i was. i mean it was really hard going to school there and things, but i just started focusing on getting to college and things like that. >> reporter: emily recalls there had been so many changes. and one change in particular was unusual. lou's name. lou now wanted to be called "joe."in that to you? that, "i'm not gonna be lou. don't call me lou over here anymore." >> i think because he didn't have the proper, like, identification to actually get legitimately established as lou. so he needed, like, an actual social securit