Question: Where did the murderer, by whom the character Keyser Söze was inspired, commit his murders?

Context paragraphs:
Billy Flynn (Chicago): Billy Flynn is a fictional character from the musical "Chicago".  In the musical, Billy Flynn is a lawyer that can win any trial, mostly being murders done by murderous wives.  He has never lost a case in his whole career.  In the play, he defends Velma Kelly and Roxie Hart, winning both cases.  Most of Billy Flynn's clients actually did commit the murder they are accused of, therefore Billy creates a fictional story like "She was defending herself" or "He was burgling her".  Billy shows himself onstage by singing "All I Care About is Love"

Charles Manson: Charles Milles Manson (born Charles Milles Maddox, November 12, 1934) is an American convicted mass murderer and former cult leader who led what became known as the Manson Family, a quasi-commune that arose in California in the late 1960s.  Manson's followers committed a series of nine murders at four locations in July and August 1969.  In 1971 he was found guilty of first-degree murder and conspiracy to commit murder for the deaths of seven people – most notably of the actress Sharon Tate – all of which were carried out by members of the group at his instruction.  Manson also received first-degree murder convictions for two other deaths.  Manson was originally sentenced to death, but his sentence was commuted to life imprisonment when California invalidated the state's death penalty statute in 1972.  He is currently serving multiple life sentences at California State Prison in Corcoran.

Nick Cotton: Nicholas Charles "Nick" Cotton is a fictional character from the British soap opera "EastEnders" played by John Altman on a recurring basis from the soap's debut episode in February 1985, in several separate stints, a regular in 1985 then a recurring character from 1986 to 1989, a regular in 1990 and 1991 with guest appearances in 1993 and 1998 and as a regular from 2000 to 2001, 2008 to 2009 and from 2014 until the character's demise in 2015.  Nick is the son of characters Charlie (Christopher Hancock) and Dot Cotton (June Brown), and the father of Charlie (Declan Bennett), Ashley (Rossi Higgins/Frankie Fitzgerald) and Dotty Cotton (Molly Conlin) (all three of whom were initially kept secret from his mother).  His storylines have seen him commit the murders of Reg Cox in 1985 and Eddie Royle in 1991, succumb to a heroin addiction, his racism, his attempts to poison his own mother, lying about having AIDS, conspiring to fake his own death and unintentionally causing the deaths of his son Ashley in 2001 and former police officer Emma Summerhayes (Anna Acton) in 2015 while attempting to murder Mark Fowler (Todd Carty) and Ronnie Mitchell (Samantha Womack) respectively.

Faust (Guilty Gear): Faust (Japanese: ファウスト , Hepburn: Fausuto ) is a character in Arc System Works's "Guilty Gear" video game series.  He first appeared in the 1998 video game "Guilty Gear" as Dr. Baldhead (Dr.ボルドヘッド , Dokutā Borudoheddo ) .  In the series, he is a doctor who becomes a murderer after the death of a girl in one of his surgeries.  After killing scores of people and being imprisoned, Faust is given a second chance after the first tournament.  He decides to commit suicide, but he learns the girl's death was actually caused by a third party.  Donning a bag on his head and taking his oversized scalpel, Faust seeks out the truth about the girl's death while dedicating himself to saving lives again.

Keyser Söze: Keyser Söze ( ) is a fictional character and the main antagonist in the 1995 film "The Usual Suspects", written by Christopher McQuarrie and directed by Bryan Singer.  According to petty con artist Roger "Verbal" Kint (Kevin Spacey), Söze is a crime lord whose ruthlessness and influence have acquired a legendary, even mythical, status among police and criminals alike.  Further events in the story make these accounts unreliable, and, in a twist ending, a police sketch identifies Kint's face as Söze.  The character was inspired by real life murderer John List and the spy thriller "No Way Out", which featured a shadowy KGB mole.

Madness (1992 film): Madness (Italian: "" ) is a 1992 Italian "giallo" film directed by Bruno Mattei.  The film is about Giovanna Dei (Monica Carpanese) who is the creator of the comic series "Doctor Dark", a character with a split personality.  After a series of murders begin to happen in similar fashion to how Doctor Dark's fictional murders.  Dei defends herself against any criticism of the violence in her comics and later finds that the murderer is leaving the eyeballs of her victims in her apartment.

The Murchison Murders: The Murchison Murders were a series of three murders, committed by an itinerant stockman named Snowy Rowles, near the rabbit-proof fence in Western Australia during the early 1930s.  The case was particularly infamous because Rowles used the murder method that had been suggested by author Arthur Upfield in his then unpublished book "The Sands of Windee", in which he described a way to dispose of a body and thus commit the perfect murder.

John List: John Emil List (September 17, 1925 – March 21, 2008) was an American multiple murderer and long-time fugitive.  On November 9, 1971, he killed his wife, mother, and three children in their home in Westfield, New Jersey, then disappeared.  He had planned the murders so meticulously that nearly a month passed before anyone suspected that anything was amiss.

Michael Dawson (Lost): Michael Dawson is a fictional character played by Harold Perrineau on the ABC television series "Lost".  Michael served as an antagonist of the second season.  After losing a custody battle with Susan Lloyd (Tamara Taylor), Michael does not see his son Walt (Malcolm David Kelley) for almost ten years.  They reunite when she dies, but on their journey home, their plane crashes on a mysterious island in the South Pacific.  Here Walt is kidnapped by the Island's previous inhabitants, the Others, and Michael spends his time trying to retrieve him.  He is eventually successful, and they leave the Island together, but the guilt over the murders he had to commit to achieve this leads him to an estrangement with his son and a suicide attempt.  He returns to the Island on a freighter, but is killed when a bomb on it explodes.  Michael reappears as a ghost, and apologizes to Hurley for killing Libby (Cynthia Watros).

Alvin and Judith Neelley: Alvin Howard Neelley, Jr. (1953–2005) and Judith Ann Adams Neelley (born 1964) are an American couple who committed two torture murders.  They each were convicted of the kidnappings and murders of Lisa Ann Millican and Janice Kay Chatman and attempted to commit a third.  Judith Neelley was sentenced to death by the State of Alabama (1983), but her sentence was commuted to life imprisonment (1999).  She is serving her sentence at the Julia Tutwiler Prison for Women in Wetumpka, Alabama.  Alvin Neelley was serving a life sentence at the Bostick State Prison in Hardwick, Georgia at the time of his death in 2005.

Supporting paragraphs: Keyser Söze John List
Answer: Westfield, New Jersey