Question: Death of a Soldier is a 1986 Australian film based on the life of American serial killer Eddie Leonski, he was an American soldier and serial killer responsible for the strangling murders of how many women in Melbourne, Australia?

Context paragraphs:
Nannie Doss: Nannie Doss (born Nancy Hazel, November 4, 1905 – June 2, 1965) was an American serial killer responsible for the deaths of 11 people between the 1920s and 1954.  Nannie Doss was referred to as the Giggling Nanny, the Lonely Hearts Killer, the Black Widow, and Lady Blue Beard.  She was called a "self-made widow" by a newspaper.

Ángel Maturino Reséndiz: Angel Maturino Reséndiz (August 1, 1959June 27, 2006), aka The Railroad Killer/The Railway Killer/The Railcar Killer, was an itinerant Mexican serial killer responsible for as many as 15 murders across the United States and Mexico during the 1990s.  Some also involved sexual assault.  He became known as "The Railroad (or Railway) Killer" as most of his crimes were committed near railroads where he had jumped off the trains he was using to travel about the country.  On June 21, 1999, he briefly became the 457th fugitive listed by the FBI on its Ten Most Wanted Fugitives list before surrendering to the Texas authorities on July 13, when he was 39 years old.  He was convicted of murder and was executed by lethal injection.

My Brother the Serial Killer: 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.

Oakland County Child Killer: The Oakland County Child Killer (OCCK) is an unidentified serial killer responsible for the murders of four or more children, two girls and two boys, in Oakland County, Michigan, United States in 1976 and 1977.  Several theories and suspects have been named in the case, but despite all these theories, the cases remain unsolved and the killer(s) have never been identified.

Eddie Leonski: Edward Joseph Leonski (December 12, 1917 – November 9, 1942) was an American soldier and serial killer responsible for the strangling murders of three women in Melbourne, Australia.  Leonski was known as the "Brownout Strangler", given Melbourne's wartime status of keeping low lighting (not as stringent as a wartime blackout).  His self-confessed motive for the killings was a twisted fascination with female voices, especially when they were singing, and his claim that he killed the women to "get at their voices."

Death of a Soldier: Death of a Soldier is a 1986 Australian film based on the life of American serial killer Eddie Leonski.  The film was shot using locations around Melbourne, Victoria.

David Meirhofer: David G. Meirhofer (June 8, 1949 – September 29, 1974) was an American serial killer who committed four murders in rural Montana between 1967 and 1974 — three of them children.  At the time, the Federal Bureau of Investigation was developing a new method of tracking killers called offender profiling, and Meirhofer was the first serial killer to be investigated using the technique.  Offender profiling is a method used to learn clues about the characteristics of an unknown killer from evidence at the scene of the crime and establish their behavioural patterns before they reach the height of their criminality.

New Bedford Highway Killer: The New Bedford Highway Killer is an unidentified serial killer responsible for the deaths of nine women and the disappearances of two additional women in New Bedford, Massachusetts, between July 1988 and June 1989.  All of the killer's victims were known prostitutes and or substance abusers.

Daytona Beach killer: The Daytona Beach killer is an American serial killer responsible for the murders of four women in the Daytona Beach, Florida area from December 2005 to December 2007.  The killer has never been apprehended.  The involvement of a serial killer was feared after the discovery of the first three victims.

Gary Ridgway: Gary Leon Ridgway (born February 18, 1949) is an American serial killer known as the Green River Killer.  He was initially convicted of 48 separate murders and is presumed to be responsible for more than 90.  As part of his plea bargain, an additional conviction was added, bringing the total number of convictions to 49, making him the most prolific American serial killer in history according to confirmed murders.  He murdered numerous women and girls in Washington State during the 1980s and 1990s.

Supporting paragraphs: Death of a Soldier Eddie Leonski
Answer: three