Conversation so far:
where does the term green mile come from
In the novel, The Green Mile, the Cold Mountain Penitentiary death row is nicknamed The Green Mile for the color of the floor's linoleum.
who is the author of the green mile
The Green Mile is a 1996 serial novel by American writer Stephen King.
When does the novel The Green Mile take place?
The Green Mile switches between Paul Edgecombe as an old man in Georgia Pines nursing home in 1996 and as block supervisor of Cold Mountain Penitentiary's death row in 1932.

Question: what is the plot of the novel
Self-contained rewrite: what is the plot of the novel the green mile