marshals and the fbi. >> and attention now turned to the young man who had been living at brittany's house, the one she had been showing off at the beach club, 26-year-old joeseems that joe had left around the same time that brittany disappeared. and police now had to consider the distinct possibility that brittany had simply washed her hands of the feud with ann leyden and taken off on a cross-country trip with young joe. for justine griffin, that only made the story more interesting. >> i mean, living in her house for free, so. >> makes you think, doesn't it? >> yeah. they thought maybe the two of them had just left, could have just gone on a trip together, just left town. >> no. really it was all speculation. in fact, nobody had a clue what those two did. and then another lucky break, or it seemed like lucky. the good nuz in mid july just four days after brittany vanished, a cop stopped her toyota out midwest. brittany wasn't driving, joe was. >> july 11th, roberts is stopped by police in wyoming for speeding. >> the bad news, that cop stopped the car before the alert went out. he wasn't looking for the car or brittany or anybody. he says he didn't recal