Mental Profile - Psychopathy

William Devon Howell became one of Connecticut's most infamous serial killers after murdering seven women between 2003 and 2005. Most of his victims were vulnerable women struggling with addiction or involved in sex work in the Hartford area. Howell concealed six of the victims in a wooded location later dubbed the "Garden of Graves," making him the most prolific serial killer in Connecticut's recorded history.

George Emil Banks became one of the most infamous mass killers in Pennsylvania history after murdering 13 people during a shooting spree in Wilkes-Barre on September 25, 1982. Among his victims were five of his own children, their mothers, and several relatives. The murders shocked the United States because of the extraordinary number of family members killed in a single attack. After decades of legal proceedings centred on his mental competency, Banks died in prison in 2024 without ever being executed.

Hadden Irving Clark became one of America's most infamous convicted murderers after killing six-year-old Michelle Dorr in 1986 and Laura Houghteling in 1992. Known for his erratic behaviour, cross-dressing, and extensive claims that he committed numerous additional murders, Clark has remained a controversial figure in criminal investigations. While many of his confessions have never been corroborated, his two confirmed murders continue to attract significant attention from investigators and true crime researchers.

John Reginald Halliday Christie became one of the United Kingdom's most infamous serial killers after murdering multiple women, including his wife, at his home in Notting Hill, London, during the 1940s and early 1950s. His crimes, committed at 10 Rillington Place, led to one of Britain's greatest miscarriages of justice when Timothy Evans was wrongly convicted and executed before Christie's guilt was uncovered. The case remains one of the most significant in British criminal history.

Ian Duncan Stewart Brady became one of the United Kingdom's most infamous serial killers after carrying out the Moors Murders with Myra Hindley between 1963 and 1965. The pair murdered five children and concealed several victims on Saddleworth Moor, creating one of the most notorious criminal cases in British history. Regarded as the dominant figure in the partnership, Brady spent the remainder of his life imprisoned and became a symbol of extreme criminality in the United Kingdom.

Myra Hindley became one of the United Kingdom's most notorious child killers after participating in the Moors Murders with Ian Brady between 1963 and 1965. Together, they abducted, sexually assaulted, tortured, and murdered five children before burying several victims on Saddleworth Moor in northern England. Hindley's role in the murders, coupled with her decades of denied parole and widespread public hatred, cemented her place as one of Britain's most reviled criminals.

Moses Sithole became one of Africa's most prolific serial killers after murdering at least 38 young women in and around Johannesburg, South Africa, between 1994 and 1995. Known as the "ABC Killer" because many of the murders occurred in Atteridgeville, Boksburg, and Cleveland, Sithole lured victims with false promises of employment before sexually assaulting and murdering them. His case shocked post-apartheid South Africa and remains one of the country's deadliest serial murder investigations.

Mitchell Sims became one of America's most notorious transient serial killers after carrying out a series of murders across multiple states during the 1980s. Nicknamed the "Pizza Hut Serial Killer," Sims was convicted of abducting, robbing, and murdering pizza delivery driver John Harrington in Las Vegas, Nevada, while investigators also linked him to the murders of another pizza employee and a customer in South Carolina. His willingness to kill complete strangers during robberies, combined with his mobility across state lines, made him one of the FBI's most infamous traveling serial offenders before his execution in 2015.