The man said, “And the silken sad uncertain rustling of each purple curtain” (467 Poe) to describe the mysterious feeling he had around him. During this part of the story the guy is in complete terror from the darkness around him and the thought that someone is there with him. He figures someone snuck in while he was asleep and now he is trying to figure out who it is. His fixation for this lady has made him crazy enough to think that she is now there with him and speaking to him in the dark of the night. As it is nighttime, it helps to add to the effect of the