Theme

The narrator's guilt is what brought the black cat back to haunt him. The cat represents his guilt: as the narrator became more guilty, the cat became more realistic. For example, the only time the cat was heard was when the police were searching the narrator's house, at which point his guilt and fear finally pushed him into full madness. The narrative shows that guilt is a key factor in man's descent into madness—yet also a vital part of what keeps us human.