>> midway through tom foley's trial the talk around coldwater focused on the damaging testimony from skyler watty and tom's own son heath. what did you think was the strongest part of your case? >> the boys. the testimony of the boys. they heard the gunshot. >> but the defense was about to argue that over time both boys' testimony had changed and in significant ways. >> heath is now stating that it sounds like a gunshot? it's something that he didn't say in the first interview. the same thing with skyler. >> heath's courtroom testimony left tom furious, not at his son but at his accusers, the people who had cared for heath while tom was incarcerated. that's somebody coaching him or encouraging him? >> i believe so. >> coached or not, tom foley's defense team knew from day one that they needed to prove the sound those boys heard was tom dropping a window frame on the back porch and not the fatal gun blast.