Answer:
I would say the mood for Tell-Tale Heart by Edgar Alan Poe could be described as creepy and haunting, as most of Poe's work can be described. Poe creates a maniacal and defensive tone throughout the story. The narrator is unreliable and constantly defends his sanity.
Step-by-step explanation:
The tone is conveyed through the narrator's denial of his madness. The whole concept of the story contributes to the mood, and throughout the story the reader feels uneasy.