What would be a good thesis statement to do with the psychological aspects and the state of mind of the narrator of the story 'The Tell-Tale Heart'?

It is important that your thesis refers to the fact that as the story is a first-person account of events, the audience has only information from a clearly deranges source. The narrator’s words, action and diction all conspire to present him as an irrational, and therefore untrustworthy, narrator.

An exploration of the bizarre movements of the narrator would help to indicate his heightened consciousness and awareness, and may be called upon to support a claim that he is so precise in his actions and observations that his account is intensely precise. A possible question for debate and analysis could be the following:

‘The story of “The Tell Tale Heart" requires the audience to trust the account of an unreliable narrator.’ How far do you believe this to be the case?’