A short review of this film on imdb.com:
"I was nobody, until I killed the biggest somebody on earth". The words of Mark David Chapman perfectly sums-up this Andrew Piddington biopic of the estranged murderer of John Lennon. Not only does the film track Chapman's movements in the months leading up to the fateful event, but it also follows what happened to the killer from the moment he shot the infamous Beatle, right through to his committal into a psychiatric hospital. The unknown Jonas Ball's portrayal of Chapman is splendidly subtle and disturbing and combined with the artful and experimental direction of Piddington, 'The Killing of John Lennon' makes for an aesthetically pleasing yet chilling examination into the mind of a killer who just wanted to be famous.
The opening sentence sums up why John's killer (I refuse to use his name) should die in jail. However, having said that, I will probably hire the movie and have a look. It sounds as if the director is not trying to glorify the killer, but objectively examine his life. Anyway, if I have a good cry when John is killed in the movie it will probably do me good. It does sound like a better film than Chapter 27, which is apparently pretty unwatchable.