Study Guide

The Curious Incident of the Dog in the Night-Time Chapter 139

By Mark Haddon

Chapter 139

  • In this chapter, Christopher tells us about The Case of the Cottingley Fairies.
  • In 1917, two young cousins claimed they played with fairies by a stream. They took photos of themselves with the fairies, and many people (including Sir Arthur Conan Doyle, who penned the Sherlock Holmes tales) believed they were real.
  • But, in the end, they were – alas! – revealed to be a hoax.
  • Christopher concludes that "Occam's razor," - a theory that says the simplest explanation is the right one – must be correct.