Conversation so far:
Who were selected as the cast?
With the help of producers Alexandra Milchan and Robert Salerno, Schaefer cast Jared Leto as Mark David Chapman
What was Leto's role?
Schaefer cast Jared Leto as Mark David Chapman.
How long did the script for Chapter 27 take to write?
The script took Schaefer four years to write, but when it was finished, the film came together quickly.

Question: How did Leto gain his 67 pounds?
Self-contained rewrite: How did Jared Leto gain his 67 pounds?