Joaquin Phoenix was at one point in negotiations to star in the project together with Jeremy Renner. Phoenix would have played Poe to Renner's police inspector Fields, but the deal fell through when Renner decided to do Mission: Impossible - Ghost Protocol.
The trivia items below may give away important plot points.
The words Poe utters before his death in the movie ("May God have mercy on my poor soul") were, reportedly, the real Edgar Allan Poe's actual last words.
The man who is cut in half by the swinging ax is Rufus Wilmot Griswold. In real life, upon Poe's death, Griswold wrote an unfavorable obituary for Poe which was first published in the October 9, 1849 issue of the New York Tribune. Additionally Griswold wrote a biographical article about Poe painting him as a depraved, drunk, drug-addled madman. Writers Ben Livingston and Hannah Shakespeare wrote Griswold's fictional death scene as revenge.