Before viewing "Rope"

I’m not sure what to expect from this film. I know Alfred Hitchcock films are usually dark and suspenseful, but I have never heard of this film before and know nothing about it. I imagine sound effects, like offscreen sound, diegetic versus non-diegetic sound and sound perspective, will be very important in a suspenseful film. Also, low key lighting and high contrast add a dark mood to a scene, so it would not surprise me if Hitchcock relied on those effects as well.
1948 America was a post-World War II country, so factories and industrialization were at their peak, but many women who had picked up the slack during the War were now competing with returning soldiers for jobs. Also, the start of the Cold War heightened these inter-culture tensions; paranoia among neighbors, friends and coworkers led to an anxious general population.