Actually I read something about his sister yesterday - here on FR, and it wasn't a post it was an article. I'm trying to remember which one. It said something about his sister "now dead" and her husband who now lived in Iraq and how much Berg enjoyed visiting him and how he was "concerned." I'll try and find it.
Wait - maybe I misunderstood. Would the "dead sister" be Michael's sister and not Nick's? If so, never mind. I was confused ;)