A year after his father's death, Oskar, a troubled young boy, discovers a mysterious key he believes was left for him by his father and embarks on a scavenger hunt to find the matching lock.
- Genre: Drama
- Studio: Paramount, Warner Bros. Pictures, Scott Rudin Productions
- Keyword: new york city, based on novel or book, autism, key, scavenger hunt, death of father, young boy, tambourine, lock, 9/11, grieving, asperger's syndrome, post 9/11, child protagonist
- Cast: Tom Hanks, Sandra Bullock, Thomas Horn, Viola Davis, John Goodman, Jeffrey Wright