. >> reporter: her now ex-husband mike dippolito said he couldn't wait to see what she said in court. >> let me know, i'll be sitting in the back with popcorn. >> walking on the sidewalk, this doesn't happen very often. >> no, it doesn't happen at all. >> reporter: in an exclusive pretrial interview with "20/20" this past december dalia dippolito said she's misunderstood. >> who is dalia dippolito? >> understanding, sweet, compassionate. >> because of that -- >> reporter: at the time her newly hired high-powered attorneys wouldn't let her talk about certain parts of the case, particularly those seemingly damning videotapes, because after her first conviction was overturned on a technicality. but yesterday there was no avoiding them. she's forced to watch that moment we've all seen again and again. >> 5,000 percent sure. >> that's all mohammad told you to say, right? >> yes, he told me to say that. >> 5,000% sure? >> i needed to project confidence. and yeah. but that's what he told me, to make it look believable. >> reporter: perhaps the most surreal moment in the courtroom, when the p

. >> rorter: her nx-husband mike dippolito said he couldn't wait to see what she said in urt. >> let me know, i'll be sitting in the backith popcorn. >> walking on the sidewalk, this esn't happen vy often. >> no, it doesn't happen at all. >> reporter: in an exclusive pretrial ierew wi "20/20" this past december dalia dippito said s's sunderstood. >> who is dalia dippolo? compassione. >> becse of that -- >>eporr: at thtime her newly hired high-powered attorneys woul't let her talk about certain parts of the se, particularly those seemingly mning deap bause she's nowing a trial r her first convictionas overtued on a technicality. but yesterd there was no oing them. e'ed to watch that moment we've all seen again and again. >> 5,000 perce su. >> that's all mohammad toldou to say, right? s, he told me to say that. >> 5,000% sure? >> i needed to proct confidence. an yeah. that wha he tol me, to make i look beliable eporr: perhaps the most surreal momen in the courtroom, when the prosecutor plays an audiotape of herryingo explain to her then-husnd me that actually didn't pay to have himille