Prediction

In the coming portions of the book, I have no idea what to expect. Even thought I've read over half of the book, I feel like either nothing much has happened...or that nothing else could happen. The only portion that is open for predictions is Grandfather. He seems to be keeping many secrets, and my guess is that they will be revealed (well, at least some of them).
So here's my prediction:
Grandfather will somehow be connected to Trachimbrod, and has kept that part of his past hidden...like a secret identity.
The following passage led me to this prediction...
"The man standing next to me was our best friend, Herschel. Herschel was a Jew. And he was my best friend. And I murdered him" (228).
Now how's that for some soap opera drama? Even better, that was the last sentence of the chapter.