In "The Black Cat," the narrator is unreliable; what actions does someone need to take for you to consider them unreliable?

the narrator is deemed unreliable due to his displays of questionable sanity. And though he makes some effort to insist he is sane, one wonders whether he is truly insane or suffers some form of psychopathy – which is not altogether the same thing.

Explanation:

peace, morning, sun glooming, sorrow, woe pardon’d, punished, more hence, talk, story. all of these three words have to do something with a depressed, regretful tone. woe is another word for misery, heartache, so all of these words are about unhappy feelings.