1.Pluto was a large black cat of the narrator.
2.The second cat was similar to Pluto through the large white patch of hair on its chest.
3.The narrator killed his wife by planting in a rage the axe in her skull.
4.The narrator has entombed his wife in the walls of his house.
5.The police find the hole where the body was because a loud shriek alerted them to something behind the wall.
6.In the hole in the wall they saw the narrator’s cat along with his dead wife.