Richard Ramirez, also known as the 'Night Stalker,' committed a series of brutal murders, rapes, and burglaries in California between 1984 and 1985.

Jeffrey Dahmer, also known as the 'Milwaukee Cannibal,' was a serial killer and sex offender who murdered and dismembered 17 young men and boys between 1978 and 1991.

Gary Ridgway, also known as the 'Green River Killer,' was convicted of murdering 49 women in Washington state between 1982 and 2001.

Andrew Cunanan was a serial killer who murdered five people, including fashion designer Gianni Versace, in a cross-country spree in 1997.

Dennis Rader, also known as the 'BTK Killer' (short for 'Bind, Torture, Kill'), committed a series of murders and burglaries in Wichita, Kansas, between 1974 and 1991.

John Wayne Gacy, also known as the 'Killer Clown,' was a serial killer and sex offender who murdered at least 33 young boys and men between 1972 and 1978.

The Zodiac Killer was a serial killer who committed a series of murders and bombings in Northern California between 1968 and 1969. The case remains unsolved.

Ted Bundy was a serial killer who abducted, raped, and murdered at least 30 young women and girls across the United States between 1974 and 1978.

David Berkowitz, also known as the 'Son of Sam,' committed a series of shootings in New York City between 1976 and 1977, killing six people and injuring several others.

Andrei Chikatilo, also known as the 'Butcher of Rostov,' was a serial killer who murdered at least 52 women and children in Russia between 1978 and 1990.

Jeffrey Dahmer, also known as the 'Milwaukee Monster,' was a serial killer and sex offender who murdered and dismembered 17 young men and boys between 1978 and 1991.

Dennis Nilsen, also known as the 'Muswell Hill Murderer,' was a serial killer who murdered at least 15 young men and boys in London between 1978 and 1983.

Joseph James DeAngelo, also known as the 'Golden State Killer,' was a serial killer, rapist, and burglar who committed at least 13 murders, 50 rapes, and 120 burglaries in California between 1974 and 1986.

Luis Alfredo Garavito, also known as the 'Beast of the Andes,' was a serial killer who murdered at least 138 young boys in Colombia and Ecuador between 1992 and 1999.

Pietro Pacciani was a serial killer who murdered at least 16 people in Florence, Italy, between 1968 and 1985.