chunk: Lydia, who is thirty-five but looks twenty-something, is the villain of the novel and her colourful portrayal takes up much of the rest of the story. Originally Allan's mother's maid, and a contributor to the conflict between Allan's and Ozias's fathers, she is a fortune-hunter and, it turns out, a murderess. Unable to alienate Allan's affections from Miss Milroy, she settles for marrying Midwinter, having discovered his name is the same. She plots to murder Allan—or to have him killed by her ex-husband, a Cuban desperado—and, since she is now "Mrs. Armadale," to impersonate his widow. Allan escapes the desperado's attempt on his life—he is supposed to have drowned in a shipwreck—and returns to England. Lydia's plans are thus foiled. Her last shot is to murder Allan herself—the weapon being poison gas, the scene being a sanatorium run by a quack called Doctor Downward—but she is thwarted by her own conscience. Midwinter and Allan have switched rooms, and she can't bring herself to