Mark David Chapman
![Mug shot of Chapman following his arrest](https://upload.wikimedia.org/wikipedia/commons/3/3d/Mark_David_Chapman%2C_NYPD_mugshot.jpg)
Following the murder, Chapman's legal team intended to mount an insanity defense based on the testimony of mental health experts who said that he was in a delusional psychotic state at the time of the shooting. However, he was more cooperative with the prosecutor, who argued that his symptoms fell short of a schizophrenia diagnosis. As the trial approached, Chapman instructed his lawyers that he wanted to plead guilty based on what he had decided was the will of God. The judge granted Chapman's request and deemed him competent to stand trial. He was sentenced to a prison term of twenty years to life with a stipulation that mental health treatment would be provided.
Chapman refused requests for press interviews during his first six years in prison; he later said that he regretted the murder and that he did not want to give the impression that he killed Lennon for fame and notoriety. He ultimately supplied audiotaped interviews to journalist Jack Jones, who used them to write the investigative book ''Let Me Take You Down: Inside the Mind of Mark David Chapman'' in 1992. In 2000, Chapman became eligible for parole, which has since been denied thirteen times. His life was dramatized in the films ''The Killing of John Lennon'' (2006) and ''Chapter 27'' (2007). Provided by Wikipedia
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