When In Cold Blood was published, Capote didn't give Nelle Harper Lee any credit. He merely dedicated the book to her and to his longtime partner, Jack Dunphy. Lee was hurt by this slight, given the time, effort, and work she put into the book.
Lee and Capote were next-door neighbors in Monroeville, Alabama. They met when they were five years old.
A number of times Capote is shown to be lying. This is true in his book, as well. Some of the more notorious quotations were altered by Capote and, unlike what Capote states in the book, Smith's last words did not include an apology.
The James Baldwin "problem novel" mentioned by Capote in the opening party is titled "Another Country".
Capote was small and dressed differently than his peers at school, while Lee was a tomboy. Throughout their early childhoods, Lee protected Capote from bullies.