Sandylapper is the only one who has even a halfway decent hypothetical answer to this question: that Scott hired someone else to do Laci in, that he didn't pay them or didn't pay them enough, and that they turned around and put the murder on him.
Which scenario, if true, STILL MAKES SCOTT GUILTY OF CAPITAL MURDER.
I don't believe the scenario (no offense, Sandy) but at least it's an explanation of sorts. Which is more than we've gotten out of the defense, during this prelim, as they cast their nets out and just expect that judge to believe that someone gratuitously went to all the trouble of setting up this insignificant manure salesman.