David Richard Berkowitz (born Richard David Falco; June 1, 1953), known also as the Son of Sam and the .44 Caliber Killer, is an American serial killer who pled guilty to eight separate shooting attacks that began in New York City during the summer of 1976.
 The crimes were perpetrated with a .44 caliber Bulldog revolver.
 He killed six people and wounded seven others by July 1977.
 As the number of victims increased, Berkowitz eluded the biggest police manhunt in the history of New York City while leaving letters that mocked the police and promised further crimes, which were highly publicized by the press.
 The killing spree terrorized New Yorkers and achieved worldwide notoriety.
David Joseph Carpenter (born May 6, 1930), a.k.a. the Trailside Killer, is an American serial killer known for stalking and murdering his victims in State Parks in California.
 Carpenter killed several people on hiking trails near San Francisco, California.
 Carpenter killed at least 10 people, with one attempted victim, Steven Haertle, surviving.
 Carpenter used a .38 caliber handgun in all but one of the killings, with a .44 caliber handgun being used in the killing of Edna Kane on Mount Tamalpais.
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.
George Chapman (14 December 1865 – 7 April 1903) was a Polish serial killer known as the Borough Poisoner.
 Born Seweryn Antonowicz Kłosowski in Congress Poland, he moved as an adult to England, where he committed his crimes.
 He was convicted and executed after poisoning three women, but is remembered today mostly because some police officers suspected him of being the notorious serial killer Jack the Ripper.
The Serial Shooter refers to what authorities now believe to be two men who committed multiple drive-by shootings targeting random pedestrians.
 The shootings occurred in Phoenix, Arizona, United States, between May 2005 and August 2006, simultaneous to the search for the serial killer known as the Baseline Killer who was also committing random murders and sexual assaults in the Phoenix area.
The Texarkana Moonlight Murders, a term coined by the news media, references the unsolved murders committed in and around Texarkana in the spring of 1946 by an unidentified serial killer known as the "Phantom Killer", or "Phantom Slayer".
 The killer is credited with attacking eight people within ten weeks, five of whom were killed.
 The attacks happened on weekends between February 22, 1946 and May 3, 1946.
 The first two victims, Jimmy Hollis and Mary Larey, survived.
 Some police officers are not sure if their attack was connected with the murders.
 The first double murder, which involved Richard Griffin and Polly Ann Moore, happened four weeks later.
 The second double-homicide, involving Paul Martin and Betty Jo Booker, occurred exactly three weeks from the first murders.
 The Texas Rangers came in to investigate, including the famous M. T. "Lone Wolf" Gonzaullas.
 Finally, almost exactly three weeks later, Virgil Starks was killed and his wife, Katie, was severely wounded.
 Most officials no longer connect that attack to the other murders.
 Contrary to popular belief, the killer did not attack during a full moon, but did strike late at night.
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.
Out of the Darkness is a 1985 American made-for-television crime thriller film about the pursuit of the serial killer David Berkowitz by New York City detective Ed Zigo played by Martin Sheen.
Manhunter is a 1986 American crime horror film based on the novel "Red Dragon" by Thomas Harris.
 Written and directed by Michael Mann, it stars William Petersen as FBI profiler Will Graham.
 Also featured are Tom Noonan as serial killer Francis Dollarhyde, Dennis Farina as Graham's FBI superior Jack Crawford, and Brian Cox as incarcerated killer Hannibal Lecktor.
 The film focuses on Graham coming out of retirement to lend his talents to an investigation on Dollarhyde, a killer known as the "Tooth Fairy".
 In doing so, he must confront the demons of his past and meet with Lecktor, who nearly counted Graham amongst his victims.
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.

Question: Out of the Darkness was a film about a serial killer known as what?
Answer: Son of Sam and the .44 Caliber Killer