'While we all knew that these were things that were important, he never said, "Oh, you mustn't tell that to anybody," because then of course we'd have been wanting to tell it to our best friend,' Mary says.
'He never said that, ever. So I never had the feeling that if I were to discuss it, it would be a real criminal offence, so I never bothered really.'
![](https://i.ytimg.com/vi/DeS52pz5UUs/maxresdefault.jpg)