Herbert, Hume Cronyn's character...
It seems to me he was the smokescreen of the movie.
During the whole film, he seems like he knows more than he lets on, even though he lets on quite a bit. It seemed to be given away when he was "just in the neighborhood" when Charlie was locked up in the garage.
But in the end, he had absolutely nothing to do with the outcome. So one has to question if Hitchcock did this deliberately to give his character ambiguity or if it was just a mistake on his part? On the other hand, he could have just been a goofy character and I read far much into him than what was intended.
If he did know what was going on through the whole him, bit of a mistake on his part to not do something about it. I also thought Uncle Charlie was on to him during the toasting scene after everybody returns from Uncle Charlie's speech.
What does everybody else think?
Smokescreen, ambiguity, mistake or just a goofy characterization?