The shadow embeds fear into the reader, as they wonder if the shadow is alive, which creates tension as the reader wonders what will happen next. Furthermore, the fact that the phrase makes it seem that the shadows are scared of something, and the reader would normally associate shadows with blackness and fear, makes the reader feel uneasy and heightens tension. It is almost as if fear is afraid of fear itself. The setting of the story also creates tension and suspense; "the great red room of Lorraine Castle, in which the young duke died".
The fact that it is set in a castle is not only typical of a gothic genre, but it builds suspense by saying; "in which the young duke died". This makes the reader feel that death is imminent. It heightens tension as it makes the reader feel as if the narrator will die at the end of the story.
Dialogue is also used by the author to create tension. At first the narrator is sceptical and doubtful about the red room and its alleged supernatural powers; "I can assure you All three stories start of with dialogue which raises the question to us, the reader, of what has just gone on and what is going to happen next.
This makes us read on. In 'The Red Room' it begins with the narrator saying: '"I can assure', said I, that it will take a very tangible ghost to frighten me. We want to find out what might happen to him. We read on to find out what will happen. Similarly, 'The Cone' starts with dialogue and makes us wonder what has just happened. This is when the man and woman are talking to each other: '"The man and woman spoke to one another in low tones.
It makes the reader want to read on as it leaves us with anticipation. It creates tension as they speak in 'low tones' telling us that they are keeping a secret.