Serial killers are individuals who have a tendency to commit multiple murders, usually over a long period of time and with a certain modus operandi. These individuals often possess a psychopathic or sociopathic personality, which makes them unable to feel empathy or remorse for their actions.

The history of serial killers dates back centuries, with some of the earliest known cases being attributed to figures such as Gilles de Rais and Elizabeth Bathory. However, the term "serial killer" itself was not coined until the mid-20th century, when criminologists began to study the phenomenon in more detail.

While serial killers can be found all over the world, there are certain countries that have seen a higher incidence of these crimes. The United States is perhaps the most notorious, with a number of high-profile cases that have captured the public imagination. Other countries with a significant number of serial killers include Canada, the United Kingdom, and Australia.

India, too, has seen its fair share of serial killers. One of the most infamous cases in recent years was that of Raman Raghav, who operated in Mumbai in the 1960s and was believed to have killed at least 41 people. Another well-known case is that of Thug Behram, who operated in the 19th century and is believed to have killed over 900 people.

Here is a small list of some of the most notorious serial killers from around the world, along with movies based on their crimes:

  1. Ted Bundy - United States - 30+ kills - Most famous serial killer in the US, known for his good looks and charm. Movie: "Extremely Wicked, Shockingly Evil and Vile."

  2. Jeffrey Dahmer - United States - 17 kills - Known as the "Milwaukee Cannibal," Dahmer was known for his predilection for necrophilia and cannibalism. Movie: "My Friend Dahmer."

  3. Andrei Chikatilo - Soviet Union - 52+ kills - Known as the "Butcher of Rostov," Chikatilo preyed on young boys and girls, often mutilating their bodies. Movie: "Citizen X."

  4. Pedro Alonso Lopez - Colombia - 300+ kills - Known as the "Monster of the Andes," Lopez is believed to have killed hundreds of young girls throughout South America. Movie: "La Bestia."

  5. Harold Shipman - United Kingdom - 218 kills - Shipman was a doctor who used his position of trust to murder his patients by lethal injection. Movie: "Appropriate Adult."

  6. Charles Sobhraj - India/France/Thailand - 20+ kills - Sobhraj was a notorious con artist and serial killer who operated throughout Asia in the 1970s. Movie: "Main Aur Charles."

  7. Nithari Killers - India - 19 kills - Surinder Koli and Moninder Singh Pandher were responsible for the murders of young girls in Noida, India, between 2005 and 2006. Movie: "No One Killed Jessica."

While the above list is by no means exhaustive, it gives an idea of the range of serial killers that have been documented over the years. It is worth noting that not all serial killers are male, and that their motives can vary widely - some kill for sexual gratification, while others may have political or ideological motivations.

In conclusion, while the topic of serial killers is a disturbing one, it is important to study their actions and motivations in order to prevent similar crimes from occurring in the future. By understanding what drives individuals to commit such heinous acts, we can work to create a society that is safer and more just for everyone.