one theory was that the -- a guy supposedly blackmailing otto frank since the beginning of the invasion for an anti-nazi remark he made, but what was interesting to me was that otto essentially had, didn't have a huge investment in finding out who did it. that wasn't -- his focus was not ever revenge, retribution and so forth. his focus was all about the future, really, and using the material to try and make a better future. >> what was it like to live with this -- live with anne frank for a couple of years? did you ever feel like -- >> no. i was -- it was very painful. i have to say, it wasn't -- i mean, i enjoyed reading the diary, and i was -- excited by many of the things that i found out, and each new discovery i made was thrilling to me, but the story is the story. i mean, what happened to her is what happened to her. so as i say in the book, i would make a kind of pact with myself, you know, i would go for a week, ten day, maybe, without thinking, here was this amazing girl, this genius who was murdered for no reason at all in bergen besson and died in, typhus and, horribly, and