Conversation so far:
When did the development of the film Chapter 27 start?
The script took Schaefer four years to write, but when it was finished, the film came together quickly.
What was the inspiration for the movie Chapter 27?
Chapter 27 is a 2007 biographical drama film depicting the murder of John Lennon by Mark David Chapman.
Why was the movie titled Chapter 27?
The title Chapter 27 suggests a continuation of J. D. Salinger's novel The Catcher in the Rye, which has twenty-six chapters.
Why is the novel The Catcher in the Rye important for this movie?
Chapman was obsessed with the book, to the point of attempting to model his life after its protagonist, Holden Caulfield.
Was Chapman interviewed for developing Chapter 27?
However, Chapman did reveal the mechanics of his unraveling during those three days in New York City to journalist Jack Jones.
What information did Chapman give for the movie?
Let Me Take You Down: Inside the Mind of Mark David Chapman, a book of Chapman's recollections of his act of violence. Chapter 27 is based on this text.
Was the script of Chapter 27 based on these interviews of Mark Chapman?
The interviews were published in 1992 as Let Me Take You Down: Inside the Mind of Mark David Chapman, a book of Chapman's recollections of his act of violence.

Question: What else was used for developing the movie?
Self-contained rewrite: What else was used for developing the movie besides the interviews of Mark Chapman?