The speaker is stating his relationship with the old man.
I loved the old man. He had never wronged me. He had never given me insult(Poe).Tone: Affectionate, Caring
The speaker would spy on him while he was asleep
I moved it slowly-very, very slowly, so that I might not disturb the old man's sleep(Poe).Tone: Creepy, Horrific
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(Poe).
The speaker does not like the eye of the old man.Tone: Annoyed, Angry
The speaker murdered the old man
The old man was dead. I removed the bed and examined the corpse. Yes, he was stone, stone dead(Poe).Tone: Terrifying, Horror-Struck
The speaker hid the body
I then took up three planks from the flooring of the chamber, and deposited all between the scantlings. I then replaced the boards so cleverly, so cunningly, that no human eye-not even his-could have detected any thing wrong(Poe).Tone: Focused, Clever
He confessed and told the police where the body is
'Villains!' I shrieked, 'dissemble no more! I admit the deed!-tear up the planks! here, here!-It is the beating of his hideous heart!' (Poe).Tone: Fearful, Nervous