Question: How many people was the subject of the film "Life and Death of a Serial Killer" convicted and sentenced for murdering?
Context: Chester Dewayne Turner (born November 5, 1966) is an American convicted serial killer.  On April 30, 2007, he was convicted of the murders of 10 women in Los Angeles, and was also found guilty in the death of the unborn child of one of his victims.  He was convicted of 4 additional murders on June 19, 2014.  Prosecutors have called Turner "one of the most prolific serial killers in the city’s history".  On July 10, 2007, Turner was sentenced to death for the 11 murders he was originally convicted of committing.  On June 26, 2014, Turner was sentenced to death a second time for the 4 additional murders. Randy Steven Kraft (born March 19, 1945) is an American serial killer known as the "Scorecard Killer" and the "Freeway Killer" who committed the rape, torture, mutilation, and murder of a minimum of 16 young men in a series of killings spanning between 1972 and 1983, the majority of which had been committed in California.  Kraft is also believed to have committed the rape and murder of up to 51 further boys and young men.  He was convicted in May 1989 of murdering 16 victims and is currently incarcerated upon death row at San Quentin State Prison in Marin County, California. Louise Peete (September 20, 1880 – April 11, 1947) was a convicted American murderer.  Peete was first convicted of murdering wealthy mining engineer Jacob C. Denton in 1920 and was sentenced to life in prison.  She was paroled in April 1939.  In May 1945, she was convicted of murdering her employer, Margaret Logan, and sentenced to death.  She was executed in April 1947 making her the second, and one of only four women, to be executed in the California gas chamber. Aileen: Life and Death of a Serial Killer is a 2003 feature-length documentary film about Aileen Wuornos, made by Nick Broomfield as a follow-up to his 1992 film "".  The film focuses on Wuornos' declining mental state and the questionable judgment to execute her despite her being of unsound mind. My Brother the Serial Killer is a 2012 American television documentary about serial killer Glen Rogers, otherwise known as the "Casanova Killer", who was convicted for a series of murders and arsons.  The documentary was narrated by Rogers' brother Clay Rogers and aired on Investigation Discovery in November 2012.  "My Brother the Serial Killer" received widespread media attention for Clay's claims that his brother was responsible for the 1994 murders of Nicole Brown Simpson and Ronald Lyle Goldman. Allan Grimson (born 1958) is a convicted British murderer who is responsible for murdering at least two men and is suspected of killing others, possibly up to another 20 undiscovered victims.  The judge, who sentenced him to a minimum term of 22 years at his trial, said that Grimson was a serial killer by nature, but not by number.  Because his two victims were killed on the same date just a year apart (12 December), detectives believe there may be more victims out there as yet unidentified. A serial killer is a person who murders three or more people, in two or more separate events over a period of time, for primarily psychological reasons.  There are gaps of time between the killings, which may range from a few hours to many years.  This list shows serial killers from the 20th century to present day by number of victims.  In many cases, the exact number of victims assigned to a serial killer is not known, and even if that person is convicted of a few, there can be the possibility that he/she killed many more. Aileen Carol Wuornos Pralle (February 29, 1956 – October 9, 2002) was an American serial killer who murdered seven men in Florida between 1989 and 1990 by shooting them at point-blank range.  Wuornos claimed that her victims had either raped or attempted to rape her while she was working as a sex worker, and that all of the homicides were committed in self-defense.  She was convicted and sentenced to death for six of the murders and was executed by lethal injection on October 9, 2002. Pedro Rodrigues Filho (born 17 June 1954 in Santa Rita do Sapucaí) is a Brazilian serial killer.  Nicknamed Pedrinho Matador (Killer Petey) and arrested in 1973, in 2003 he was convicted of murdering at least 71 people and sentenced to 128 years in prison. Richard Angelo (born August 29, 1962) is an American serial killer and former nurse at the Good Samaritan Hospital in West Islip, New York.  In 1989, he was convicted of murdering several of his patients and sentenced to 50-years-to-life in prison.
Answer: six