erik menendez had, in fact, shotgunned their parents to death. >> the prosecution's star witness was dr. jerome oziel. he was their therapist, and he was the person who the brothers had confessed to. >> "we did it." they said, "we killed our parents." >> i didn't believe they were guilty. i just couldn't fathom that they could have done that. i never believed whatsoever, until it came out at trial. >> the defense may call its next witness. >> defense calls joseph lyle menendez. >> lyle was the first one to take the stand. even just hearing his voice was dramatic for everyone because it's very rare that you get to hear from the mouth of someone who has committed a murder exactly how that murder went down. >> we just burst through the