frantically worked to save diana, trevor rees-jones has to be cut out of the car. they're both taken to the hospital where diana undergoes emergency surgery. but her injuries are too severe. and at 4:00 a.m., princess diana is pronounced dead. >> we are just getting word that the french government has informed all of us that princess diana has died. >> she suffered serious internal injuries and she succumbed. >> trevor rees-jones is the only survivor. at balmoral castle in scotland, prince charles is woken with a call from paris. >> charles is told that diana has died. one of the people working at balmoral said that charles let out this howl of anguish. he was devastated. of course his first thoughts were for the boys, what to do. >> when we come back, heartbreak