mac store is owned by pot's brother-in-law. >> his friend, the alibi witness, now testified for the prosecution, that yes, he initially lied for reginald, but didn't know it was to cover up a murder. and remember those three strange hangup calls to 911 and those odd texts her family and boyfriend received? it was reginald potts using nailah's phone hours after he murdered her, said the prosecution. a clever killer's attempt to throw off a missing person's investigation. >> he's smarter than the average criminal. but not as smart as he thinks he is. >> but reginald potts was nothing if not strategic. his defense was to refute their evidence and discredit the prosecution. >> defense attorneys need to create reasonable doubt. in this case, it was very difficult to determine cause of death. so immediately, the defense is