Tex and Charlie, Part 3

Was "Tex" Watson truly insane when he carried out the Tate-LaBianca killings? That's his defense, at least. In this episode of "A Murderous Design," Judge Brandon Birmingham walks you through the prosecution's efforts to poke holes in that defense. What did Tex do to undermine his plea? What was Charles Manson's direct involvement? And how did one family member attempt to prevent any further murders?