The Fall of the House of Usher: Who is in the pictures that Arthur Pym finds?

In episode 5 of The Fall of the House of Usher, titled "The Tell-Tale Heart," Arthur Pym continues his investigation into the mysterious woman who has been appearing in the lives of the Usher children. Arthur uncovers three pictures of a woman who bears a striking resemblance to a bartender from Roderick's past. This leads Madeline to speculate that Roderick and the bartender may have had a daughter who is now targeting the Usher siblings in an attempt to eliminate competition for the family fortune.While Roderick is unaware of the true identity of the woman, he confides in his deceased friend, Griswold, who he believes is buried in a brick wall he often talks to. This peculiar behavior hints at a connection to Edgar Allan Poe's story "The Cask of Amontillado," in which a man is walled in by a vengeful friend. Roderick's advancing dementia makes it difficult for him to distinguish reality from his horrifying visions of his dead children.In the midst of this chaos, the remaining Usher children are dealing with their own issues. Tamerlane is convinced her husband is cheating on her with Candy, who is actually one of Verna's disguises. Frederick, driven by paranoia, plans to bring his wife, Morelle, back against medical advice, seeking a distorted form of justice for her betrayal. Victorine, pressured to move forward with her experimental heart mesh, faces conflict with her girlfriend Alessandra, who threatens to expose the unethical practices surrounding the experiment. Their heated argument ends tragically with Victorine accidentally killing Alessandra and attempting to revive her by implanting the heart mesh into her lifeless body.As the episode concludes, four of the Usher children have met tragic ends, leaving two remaining. The identity and motives of the mysterious woman continue to elude the Usher family, as they struggle to reconcile their differences and come together against the forces that threaten them.