Over eight episodes, Netflix's The Fall of the House of Usher adapts Edgar Allan Poe's titular short story, while incorporating elements from his other work. It leads to a more psychological narrative than straight-up horror, that focuses on Roderick and Madeline -- twins whose family is being killed off by a mysterious entity in Verna (Carla Gugino).
Source:https://www.cbr.com/the-fall-of-the-house-of-ushers-ending-explained/