The Curious Incident of the Dog in the Night-Time is a 2003 mystery novel by British writer Mark Haddon. Its title refers to an observation by the fictional detective Sherlock Holmes (created by Arthur Conan Doyle) in the 1892 short story "The Adventure of Silver Blaze". Haddon and The Curious Incident won the Whitbread Book Awards for Best Novel and Book of the Year, the Commonwealth Writers' Prize for Best First Book, and the Guardian Children's Fiction Prize. Unusually, it was published simultaneously in separate editions for adults and children. The novel is narrated in the first-person perspective by Christopher John Francis Boone, a 15-year-old boy who is described as "a mathematician with some behavioural difficulties" living in Swindon, Wiltshire. Although Christopher's condition is not stated, the book's blurb refers to Asperger syndrome (which today would be described as an autism spectrum disorder), high-functioning autism, or savant syndrome. In July 2009, Haddon wrote on his blog that "The Curious Incident is not a book about Asperger's...if anything it's a novel about difference, about being an outsider, about seeing the world in a surprising and revealing way. The book is not specifically about any specific disorder", and that he, Haddon, is not an expert on the autism spectrum or Asperger syndrome. The book uses prime numbers to number the chapters, rather than the conventional successive numbers. Originally written in English, it has been translated into 36 additional languages. Plot Christopher John Francis Boone is a 15-year-old boy with autism living in Swindon, England, with his widowed father, Ed. Christopher’s mother Judy was known to have passed away from a heart attack two years prior to the events of the story. One day, Christopher discovers that his neighbor Mrs. Shears’ dog, Wellington, has been fatally speared with a garden fork. As Christopher mourns over Wellington’s body, Mrs. Shears calls the police. When a policeman grabs Christopher’s arm, Christopher panics and hits him, resulting in him being arrested for assaulting a police officer, though he is quickly released with a police caution. He decides to investigate the dog's death, chronicling any information he receives in a book. During his investigation, he meets the elderly Mrs. Alexander, who informs Christopher that his mother had an affair with Mr. Shears. Ed discovers the book and confiscates it. While searching Ed’s room for the book, Christopher finds letters from his mother dated after her supposed death,