Answer: “The Tell-Tale Heart” by Edgar Allan Poe is a short story written in the genre of horror. It describes the committing of murder and then confessing it due to being tormented by a guilty conscious.
Explanation: Some examples or excerpts from the story...
Above all was the sense of hearing acute. I heard all things in the heaven and in the earth. I heard many things in hell. How, then, am I mad? Hearken! and observe how healthily — how calmly I can tell you the whole story.
Whenever it fell upon me, my blood ran cold; and so by degrees — very gradually — I made up my mind to take the life of the old man, and thus rid myself of the eye forever.
But even yet I refrained and kept still. I scarcely breathed. I held the lantern motionless. I tried how steadily I could maintain the ray upon the eye. Meantime the hellish tattoo of the heart increased.
“Villains!” I shrieked, “dissemble no more! I admit the deed! — tear up the planks! — here, here! — it is the beating of his hideous heart!”