Which character embodies a serene and otherworldly presence in the story?

The character who embodies a serene and otherworldly presence in "Fifth Business" is Mary Dempster. She is portrayed as a significant figure, often interpreted as a saintly character who has a profound impact on those around her, particularly on Dunstan Ramsay, the narrator. Her demeanor and behavior transcend ordinary human experiences, and she is associated with themes of mysticism and spirituality throughout the story.

Mary's qualities and actions serve to highlight the novel's exploration of the dichotomies between the mundane and the extraordinary. Her presence prompts characters to consider deeper existential questions, and she symbolizes the idea of grace and redemption. Thus, her character stands out as an embodiment of serenity and a connection to the transcendent, making her the most fitting embodiment of an otherworldly presence in the narrative.