Though the narrator seems convinced that the letters will provide access to the truth, if only they can be read, the narrator has no evidence for this claim. Interestingly, rather than attempting to read the letters, the narrator instead uses their appearance in the mirror as a jumping-off point for an elaborate invented scene where Isabella both reads the letters and decides to hide them from the viewer. Aside from a view of the envelopes in the mirror, and this completely imaginary image of Isabella opening them, the narrator has no information about what is inside the envelopes. Thus this passage shows the narrator mistaking this surface detail—the visible envelope—for real information about what can be found under the envelope's surface. Perhaps the letters are correspondence, perhaps they are bills, perhaps they are something else altogether. But because the letters are never actually opened, this moment cannot tell the audience anything substantive about Isabella or the letters themselves. Instead, this moment testifies to the way the narrator mistakes surface details for inner truth, and how—even with the help of imagination—these surface details do not provide any real insight into Isabella's inner world.