In "The Trimmed Lamp" by O'Henry
https://librivox.org/the-trimmed-lamp-by-o-henry/
Chapters 18-25 are mislabeled. All those chapter names are shifted by 1.
Chapter 18 should be "According to Their Lights" (the current name of chapter 19),
Chapter 19 should be "A Midsummer Knight's Dream" (the current name of chapter 20) and so on.