"To me, this world is nothing but evil, and my own evil just happened to come out 'cause of the circumstances of what I was doing." - Aileen Wuornos, accused of having killed seven men.

What makes a serial killer tick has been a mystery, a topic of research for years. Some say that it is an illness, while some say that it is because of childhood experiences. We may not quite understand why killers kill, but one thing we have learnt is that most serial killers are quite charming. In fact, they use their charm to build trust in their victims and seduce them into their fatal ploy. Now, that's something.

We bring you a few of the most enigmatic serial killers known to us:

1. Ted Bundy

Bundy is considered to be the most charming serial killer in history. He raped and mutilated many women. He confessed to having killed 30, though the exact number remains unknown. His modus operandi was to plaster his forearm arm and approach women in parking lots asking for help. He would then take them to an isolated place where he would mutilate and rape them and have sex with their corpses. Presenting the handsome necrophilic psychopath.

2. Richard Ramirez a.k.a. Night Stalker

By the age of 29, Ramirez had already killed 13 people. He was charged with 13 murders, 5 attempted murders, 11 sexual assaults and 14 burglaries. But all of this didn't deter his female admirers, one of whom wrote him over 75 love letters in 3 years and eventually married him.

3 . Charles Shobhraj a.k.a. The Serpent a.k.a. Bikini Killer

Accused of having drugged and killed over a dozen western tourists in Asia, Charles Shobhraj had a way with his victims. His charm didn't stop at entrapping his victims. Even in jail, he had quite a female fan following. He married his lawyer's daughter while serving time in Nepal.

The charming killer has won the attention of filmmakers as well. Randeep Hooda portrays this enigmatic character in Main Aur Charles, releasing on Friday, 30th October, 2015. Can't wait to watch it!

4. Paul John Knowles a.k.a. The Casanova Killer

This breathtakingly gorgeous man is classified as a ' spree killer.' He was first sent to jail at the age of 19 for theft. However, after that he spent six months in jail every year on some account or another. He is accused of having killed 19 people. His method of murder - strangulation.

5. Jeffrey Dahmer a.k.a. Milwaukee Cannibal

Dahmer killed, mutilated, cooked, ate and had sex with the dead bodies of around 17 men and boys. His last potential victim figured out his game and alerted the police, who caught him. He was beaten to death by a fellow inmate two years after imprisonment.