According to The Mirror, royal historian and biographer Robert Lacey explained that William actually "wept" while watching the interview and that "something inside him snapped."
"Before the 58 minutes ended, William was weeping," Lacey writes in his newest book, Battle Of Brothers: William, Harry And The Inside Story Of A Family In Tumult, adding that William's housemaster at Eton, Dr. Andrew Gailey, actually found the young prince in the midst of a mini-breakdown after he watched the show. "Gailey told Diana that he found her son slumped on the sofa, his eyes red with tears."
William is currently supporting an inquiry from the BBC into renewed allegations that Bashir manipulated Diana by forging documents to secure the interview.
This article originally appeared on marie claire US.