Christopher, a bright but autistic boy, finds his neighbor's dog, Wellington, mysteriously murdered in Mrs. Shears's garden.

Misunderstanding his actions, the police unwittingly accuse him of something, prompting him to launch his own investigation, much like the characters in his favorite crime novels.

What begins as a simple puzzle gradually transforms into a journey that uncovers profound secrets about his family and lies he never imagined existed. Caught between his protective father and the sudden revelations about his mother, Christopher is forced to confront a bewildering world of chaos and confusion.