The Curious Incident of the Dog in the Night-time

There are lots of things about this book that make it unusual. Like the fact that the chapter numbers march along thusly: 2, 3, 5, 7, 11, 13, 17, 19...

Or that to the the main character, Christopher John Francis Boone, the signs in the train station at first look like this:



But then they start to look like this:



This "mystery" story is told in first person by a guy who, let's say, is not your average teenager. The Curious Incident of the Dog in the Night-time by Mark Haddon in the paperback collection: PB HAD.