What is the main defense strategy in Sammy Schaefer's murder trial?

In Sammy Schaefer's murder trial, the defense's key strategy is challenging the credibility of Marty Shaw, who is the primary witness providing the narrative that prosecutors are relying on. During pretrial hearings, the defense argued it's unfair to trust Shaw's account since he is the man Schaefer allegedly hired for the murder and is also facing murder charges himself. This credibility challenge represents a major strategic approach for the defense team as they attempt to undermine the prosecution's case by questioning the reliability of testimony coming from someone with significant legal jeopardy of his own. The defense hopes to create reasonable doubt by highlighting Shaw's potential motivation to shift blame.