Mark Haddon is an English novelist, poet, and screenwriter born in 1962. He is best known for his novel "The Curious Incident of the Dog in the Night-Time," which won several awards and has been adapted into a play and a film. Haddon has also written several other novels, including "A Spot of Bother" and "The Red House," and has worked as a television writer and illustrator. He has been praised for his ability to create complex, relatable characters and explore difficult topics with sensitivity and humor.