What is the story behind the green mile?

The Green Mile is a 1996 serial novel by American writer Stephen King. It tells the story of death row supervisor Paul Edgecombe's encounter with John Coffey, an unusual inmate who displays inexplicable healing and empathetic abilities.

All this is further explained here. Likewise, is The Green Mile based on a true story?

"The Green Mile" (so-called because this Death Row has a green floor) is based on a novel by Stephen King, and has been written and directed by Frank Darabont. That, too, was based on a King prison story, but this one is very different. It involves the supernatural, for one thing--in a spiritual, not creepy, way.

One may also ask, who Is The Green Mile based on? The Green Mile (film)

The Green Mile
Directed by Frank Darabont
Produced by Frank Darabont David Valdes
Screenplay by Frank Darabont
Based on The Green Mile by Stephen King

Thereof, what is the story of the Green Mile?

Paul Edgecomb (Tom Hanks) walked the mile with a variety of cons. He had never encountered someone like John Coffey (Michael Clarke Duncan), a massive black man convicted of brutally killing a pair of young sisters. Coffey had the size and strength to kill anyone, but not the demeanor. Beyond his simple, naive nature and a deathly fear of the dark, Coffey seemed to possess a prodigious, supernatural gift. Paul began to question whether Coffey was truly guilty of murdering the two girls.

Why did they kill John in The Green Mile?

John had been sentenced to death after being convicted of raping and murdering two white girls. One of the other inmates is a Native-American named Arlen Bitterbuck, who is charged with murder and is the first to be executed.