I am not so big on scary Hitchcock ( or really scary anything ), so for Halloween I count any of his films as appropriate to watch in honor of the holiday.
Thelma Ritter steals every scene she is in, and is one of my favorite character actors.
Claude Rains is a Nazi ruled by his mother, and this makes him so much more creepy.
Michael Redgrave proves here that he would have been an excellent choice to be one of the faces of The Doctor on Doctor Who.
This is an odd one, even for Hitchcock, and I love it.
Cary Grant and James Mason have a battle to determine who has the most charm.