reporter: not by the boys. not by kitty. she became like his right-hand man in enforcing things. reporter: including what diane and alan came to know as the single most important rule in the menendez house. you cannot go down the hall when jose is with his kids. kitty didn t go down the hall either. no. no. uh-uh. reporter: but they did hear things. i ve heard them being whipped, oh man, it was gut wrenchin . the screams and the, daddy, don t hit me. daddy, don t you know, that kinda stuff. reporter: a disturbing series of stories, that to the defense, began to explain what those young men did to their parents. but how do you get from disturbing stories to a double murder? the brothers lawyers began to connect the dots. their defense would be unique. and daring. coming up the prosecution versus the defense
not by kitty. she became like his right-hand man in enforcing things. including what diane and alan came to know as the single most important rule in the menendez house. you cannot go down the hall when jose is with his kids. kitty didn t go down the hall either? no. no. uh-uh. but they did hear things. i ve heard them being whipped, oh man, it was gut wrenching. just the skroems screams and the daddy don t hit me, daddy, don t that kind of stuff. a disturbing series of stories, that to the defense, began to explain what those young men did to their parents. but how do you get from disturbing stories to a double murder? the brothers lawyers began to connect the dots. their defense would be unique. and daring. coming up the prosecution versus the defense