The story is a double play: is it the story of a woman going mad, or a woman possessed by something evil? We begin to suspect that the narrator’s apparently caring husband John, may not be as caring as she thinks. Is he trying to control her? We know that Charlotte was much concerned with the emancipation of women and them achieving financial independence, so is the character of John an echo of this?
The horror in the story revolves around the Yellow Wallpaper and like many of us, she sees to have seen patterns in the abstract wallpaper that eventually evolve into characters. She ultimately can enter the wallpaper and more disturbingly, the woman from the wallpaper can come out into her room. The bizarreness of the crouching, creeping figures serves to unnerve the reader.