him off that night. the source will only say it's as trivial as that spilled drink allegedly behind the double-murder. >> motive does not have to be proven under the law. >> jared leone is both a former massachusetts district attorney and federal prosecutor. >> juries like motive. juries want to know why someone did something, especially when they have done something alleged to be as heinous as this was. >> a motive, no matter how trivial, would make the state's case stronger. prosecutors have already bolstered the case by upgrading the charges against co-defendants ortiz and wallace to murder. >> how do you plead? >> not guilty. >> not guilty. >> charging of carlos ortiz and ernest wallace for murder really signals that this will be a joint venture murder prosecution, where anyone who actively participates in the