Poll: Most Suspenseful 1940s Hitchcock Film?

Everyone knows who Alfred Hitchcock was - a very prolific director, considered to be the best ever, and one who failed to win the Best Director Oscar. Shame. However, he did direct a Best Picture winner in Rebecca (1940), which propels us into this poll: What's your vote for the most suspenseful Hitchcock film from the 1940s? Are you ready? Discuss here: http://www.imdb.com/board/bd0000088/nest/254677955