Notable Duos

• Fred and Rosemary West (UK, 1960s-1980s): The couple murdered at least 12 young women and girls, including family members, torturing and burying victims under their home in Gloucester. Fred confessed to multiple killings, while Rose actively participated and covered up crimes.[oxygen]

• Michel Fourniret and Monique Olivier (France/Belgium, 1980s-2000s): Known as the “Diabolical Couple,” they killed at least eight girls and young women. Olivier lured virgins using ploys like pretending to need help while pregnant, enabling Fourniret’s rapes and murders.[youtube +1]

• Leonard Lake and Charles Ng (US, 1980s): Though both male, this duo built a torture chamber in a remote cabin, kidnapping and killing up to 25 women after filming atrocities. Included for contrast as a highly destructive male team.[crimeandinvestigation]