At the end of the credits, I always read all the credits after every movie I watch because you learn things, was The Boy in The Box. I researched that and found out that there had been a murder of a small boy, 4 or 5, in rural PA back in 1957 who was found in a card board box by the side of a road. It has never been discovered who he was, and many detectives and others have tried solving the case over the years. He is known as America's unknown child. You can google the boy in the box to read more of this unsolved homicide. Tragic and sad. But after seeing the movie and reading about this case, it was closely related and interesting to see how the movie was loosely based on some of the facts of the real case. I thought the movie was well done.
