That sounds excellent. Poe’s a favourite of mine. If you want a couple of nice, short reads of his, all the famous ones are great but have a read of these, each just a couple of brilliant pages:
The Imp of the Perverse. I’m begging you to read at least this one. Edgar Allan Poe Society of Baltimore - Works - Tales - The Imp of the Perverse (Text-06)
The Masque of the Red Death. http://www.eapoe.org/works/tales/masquec.htm
The Sphinx. Classic Literature
The Spinx is the worst one but probably the most important for you to read if you’re designing this type of a game.
It did look like a police sketch. I like that. But I understand why you’re changing it.
And I repose my question: how far along is it and when do you foresee something playable being available, or at least some videos?