buried this close to the house, she's obviously hidden. it's got to have been him. >> what you call a circumstantial case. >> yes. >> the defense attorney concedes he had some difficult circumstances to overcome in this case, beginning with the six hours of missing surveillance camera video from the night nique leili disappeared. clegg insists his client did not erase those files as the prosecution claimed. >> the video surveillance system was shut off at some point in the morning. matt believes that nique shut it off. he is insistent that he did not shut it off, that the system was shut off by nique. >> so whatever happened to her, the cameras didn't see it. >> the cameras did not see it. that is absolutely correct. >> as for those audio recordings of the couple's screaming arguments, clegg pointed out that most were recorded in 2008 and 2009, two years before nique died. according to the defense attorney, matt made the recordings with the encouragement of a marriage therapist that the couple had been seeing at the time. >> he is talking, and he is