Ment
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No.
Fake. Sherlock didn't recognize my status. Unless he deduced my role and made a conclusion based on it, but what's the point of doing that?
Fake. If this was written by Hastings about Poirot's results, then he couldn't have gone to visit a RESPECTED person, because ND doesn't receive.
Regarding Sherlock, see above. And I don't understand how I relate to prepositions.