SKD

Charles Chi-tat Ng and Leonard Thomas Lake were the American serial killers who murdered an estimated 11 to 25 victims at a remote cabin in Calaveras County, California, in the Sierra Nevada foothills 150 miles east of San Francisco.

Josef Mengele, also known as the Angel of Death was a German Schutzstaffel (SS) officer and physician during World War II. He is mainly remembered for his actions at the Auschwitz concentration camp, where he performed deadly experiments on prisoners and was a member of the team of doctors who selected victims to be killed in the gas chambers and was one of the doctors who administered the gas. With Red Army troops sweeping through Poland, Mengele was transferred 280 kilometers from Auschwitz to the Gross-Rosen concentration camp on 17 January 1945, just 10 days before the arrival of the Soviet forces at Auschwitz.

Gary Leon Ridgway, also known as the Green River Killer, is an American serial killer. He was initially convicted of 48 separate murders. As part of his plea bargain, another conviction was added, bringing the total number of convictions to 49, making him the second most prolific serial killer in United States history according to confirmed murders. He killed many teenage girls and women in the state of Washington during the 1980s and 1990s.

Anthony John Hardy was an English serial killer who was known as the Camden Ripper for dismembering some of his victims. In November 2003, he was sentenced to three life terms for three murders, but he may have killed up to nine people.

Carl Eugene Watts, also known by his nickname Coral, was an American serial killer dubbed "The Sunday Morning Slasher". He died of prostate cancer while serving two sentences of life imprisonment without parole in a Michigan prison for the murders of Helen Dutcher and Gloria Steele, although the number of his victims may have exceeded 100.

Carroll Edward Cole (May 9, 1938 – December 6, 1985) was an American serial killer who was executed in 1985 for killing at least fifteen women and one boy by strangulation between 1947 and 1980.

John George Haigh, commonly known as the Acid Bath Murderer, was an English serial killer who was convicted for the murders of six people, although he claimed to have killed nine. Haigh battered to death or shot his victims and disposed of their bodies using sulphuric acid before forging their signatures so he could sell their possessions and collect large sums of money.

Robert William "Willy" Pickton is a Canadian serial killer who was convicted in 2007 of the second-degree murders of six women. Arrested in 2002, he was the subject of a lengthy investigation that yielded evidence of numerous other murders. Pickton was charged with the deaths of an additional twenty women, many of them from Vancouver's Downtown Eastside, but these charges were stayed by the Crown in 2010. Pickton was sentenced to life in prison, with no possibility of parole for 25 years – the longest sentence for murder under Canadian law at the time he was sentenced.

Dayton Leroy Rogers is a serial killer currently on Oregon's death row at the Oregon State Penitentiary for six murders.

Gerard John Schaefer Jr. was an American murderer and suspected serial killer who was imprisoned in 1973 for murders he committed while he was a sheriff's deputy in Martin County, Florida. Schaefer was convicted of two murders but was suspected of many others. He frequently appealed against his conviction, but privately boasted, both verbally and in writing, of killing more than thirty women and girls. In December 1995, Schaefer was stabbed to death in his prison cell.