Study Guide

The Curious Incident of the Dog in the Night-Time Chapter 89

By Mark Haddon

Chapter 89

  • The next day, Christopher goes to school and tells Siobhan that he won't be able to finish the book, because his dad made him promise to stop detecting.
  • She's okay with that – the book is really good as is, and not all books have nice tidy conclusions to their mysteries anyway (perhaps that's what makes them mysterious).
  • They have a brief conversation about Mr. and Mrs. Shears, but Siobhan can't offer Christopher any help because she doesn't know the couple.
  • Each of the next two days, Christopher sees four yellow cars in a row on the way to school. You know what that means: Black Days.