I am afraid tha I will be just as disappointed with the final bok as I was with the previous couple.
Sirius Black disappears behind a curtain. Everybody says - well now Harry, he's dead and we can't do anything about it! - no explanation why he should be dead. No explanation what the curtain was, or why going behind it should be dangerous or deadly. I found the whole business totally unsatisfactory.
Quack!
GtD.