For those who read and understood Edgar Poe's stories, the new Flanagan's work would be a revelation. I agree with some other reviewers that the naming of this show is somewhat misleading, especially for viewers who are trying to compare it to "The Fall of the House of Usher" story. It is not an adaptation. It is a hommage to Poe's legacy and the ideas the author encapsulated in his works. You can easily notice the reference to at least one of Poe's stories or poems in each episode: "The Masque of the Red Death," "The Black Cat," "The Pit and the Pendulum," "The Tell-Tale Heart," "The Gold-Bug," "The Raven." And maybe even more (I read Poe a long time ago). Flanagan captured Poe's gothic atmosphere and core ideas and translated them through the modern context and language, which many, I think, did not like.
Review of The Fall of the House of Usher
