Conversation so far:
what was the development of the movie chapter 27?
Chapter 27 is based on the text Let Me Take You Down: Inside the Mind of Mark David Chapman, a book of Chapman's recollections of his act of violence.
what else was the movie Chapter 27inspired by besides a book?
The murder of John Lennon by Mark David Chapman.
what was John Lennon's biggest accomplishment?
He gained worldwide fame as the founder, co-lead vocalist, and rhythm guitarist of the Beatles.
Are there any other interesting aspects about the Chapter 27 movie article?
Chapman's motives were fabricated from pure delusion, fueled by an obsession with the fictional character Holden Caulfield and his similar misadventures in J.D. Salinger's The Catcher in the Rye.
why is Mark Chapman incarcerated?
for murdering 40-year-old musician and activist, John Lennon
How was Mark Chapman caught for the accusation of Murdering John Lennon?
Chapman remained at the scene reading J. D. Salinger's novel The Catcher in the Rye until he was arrested by the police.

Question: what mechanics of his unraveling did chapman reveal?
Self-contained rewrite: what mechanics of his unraveling did Mark Chapman reveal after murdering John Lennon?