>> the motive, no matter how trivial, would make the state's case stronger. prosecutors have already bolstered the case by codefendant's case to murder. >> how do you plead? >> not guilty. >> charging of carlos ortiz and wallace for murder is a joint venture prosecution. anyone who actively participates in the murder can be held guilty for the murder. >> that would mean hernandez could be convicted of a murder even if prosecutors can't prove he fired the gun. but none of this makes the case rock solid. it still has holes. >> there remains no murder weapon. >> conviction without a gun is more difficult. still ahead -- >> all based on speculation. >> are the holes about to get larger? attorneys argue whether jurors should hear odin lloyd's very last text. >> they are totally innocuous.