the curious incident of the dog in the night-time

This book is about Christopher who knows all the countries of the world and their capitals and every prime number up to 7,057. He relates well to animals but has no understanding of human emotions. He cannot stand to be touched and he detests the color yellow. Although gifted with a superbly logical brain, fifteen-year-old Chirstopher is autistic and everyday interactions and admonishments have little meaning for him. Then one day, a neighbor's dog, Wellington, is killed and his carefully contructed universe is threatened. Christopher thinks his mother was killed by heart disease but the truth was she was still alive but living away. Christopher reads the letter from his mother which was hidden in his father room and find out the truth about his mother's existence and leaves his father to London...