National Theatre Live: The Curious Incident of the Dog in the Night-Time. This critically acclaimed play took the theatre and screen by storm. Based on the novel by Mark Haddon and adapted by Simon Stephens, the play tells the story of Christopher, fifteen years old, who finds Mrs. Shears’ dead dog. Under suspicion, he records each fact in the book he is writing to solve the mystery of who murdered the dog, Wellington. With his extraordinary brain and exceptional math skills, he overcomes his fears and ventures out into the world to solve the case.