Plot Summary from Wikipedia: The play involves a significant reworking of the source material. Rather than present the story in the first-person narrative as the original novel did, the play is presented as a reading of Boone’s own writing, read aloud in segments by his teacher. The result is that the play is presented as a play-within-a-play. Set in Swindon and London, the story concerns 15-year-old Christopher John Francis Boone, a mathematical genius with an autism spectrum disorder, although his condition is never specified in the play. The titular curious incident is the mystery surrounding the death of Wellington, his neighbor Mrs. Shears’ poodle, after Christopher finds the dog speared with a garden fork. While trying to discover who killed Wellington, he encounters resistance from many neighbors, but mostly from his widowed father, Ed. Christopher argues to himself that many rules are made to be broken, so he continues to search for an answer. During his investigation, Christopher happens across letters from his mother, Judy, dated after her alleged death. Ed admits that Judy is alive and living in London with their neighbor with whom she had an affair; he had fabricated the story about her passing away from a heart attack two years prior. He also admits that he killed Wellington in a fit of fury after an argument with Mrs. Shears. Distraught and fearing for his life, Christopher heads to London to find and live with his mother, traveling by himself for the first time in his life. He finds the journey overstimulating and stressful, but eventually succeeds and is welcomed by his mother. However, his ambitions lead him back to Swindon, where he wants to sit an A Level mathematics exam. Christopher achieves the best possible result and gradually reconciles with his father. In a short scene after the curtain call, Christopher reappears to brilliantly solve his “favorite question'“ from the mathematics exam. *While the play tells Christopher’s story it tries to externalize his experience of the world. While he play is never explicit, it is clear that Christopher is autistic and very high functioning. He is very good at math and puzzles, has an almost perfect memory, loves space, Sherlock Holmes mysteries and the simplicity of animals (the dog next door who is killed at the beginning of the play and his pet rat Toby). His brain works in very linear ways, he has trouble understanding verbal shading. He can not bear to be touched. His brain works like a computer with clear on- off, yes-no responses and can be easily overloaded leading to a crash.*