A Dark Mirror by Arthur Quiller-Couch is a captivating tale of self-reflection, mystery, and the duality of human nature. The story follows a protagonist who is confronted with a mirror that reveals not only his physical image but also deeper, darker truths about his character. With psychological depth and atmospheric tension, Quiller-Couch explores themes of identity, guilt, and the complexities of the human soul, creating a gripping narrative that keeps readers questioning what lies beneath the surface.