Worst serial killers in the history: What pushed them?

 Forensic drama and cop shows had taught us that serial killers are not a part of the race of human being. They are monsters! These cunning, diabolical, predators hide in shadows. So what does it take to become a monster? What is the driving force behind committing such heinous crimes? Read on to know about worst serial killers in history and what pushed them into it.

1. Andrei Chikatilo

This Russian serial killer was known for sexually assaulting, murdering and mutilating about more than 50 young women and children and a nine-year-old was also among them. He killed his victims by slashing and stabbing them with a knife. He admitted of getting an orgasm by stabbing women due to which he couldn't resist his strong urges to kill.

2. Alexander Pichushkin

Well-known as the Bitsa Park Maniac and the Chessboard Killer. He lured homeless men to his house with vodka. Accused of killing 49 people, he used to insert vodka bottle into the gaping skull wound. He confessed that he wanted to complete the number of squares on a chessboard and kill 64 people. Also, he was in competition with another Russian serial killer, Andrei Chikatilo.

3. Charles Edmund Cullen

Cullen was a nurse by profession and was fired for suspicious behaviour from many of the co-workers. He confessed to having murdered 40 elderly patients in New Jersey from 1984 to 2003. He poisoned about 300 patients to death with unprescribed medicines. By doing this he wanted to relieve the patients from their suffering much like an angel would do for them.

4. Tsutomu Miyazaki

Also known as "The Human Dracula" this man abducted young girls, killed them and was indulged in sexual activities with their corpses. Not only he drank the victim's blood but ate her hand as well on one occasion. He proudly preserved body parts as trophies at his house.

5. Renuka Shinde & Seema Gavit

At a very early age, the killer sisters were trained to be petty thieves by their mother. Shortly, they started the kidnapping of young children and using them for defence against accusations, in case, they got caught. Children who started creating problems for them got killed by these sisters. The sessions court charged them for 13 kidnappings and 9 murders. They are about to be the first women in India to be hanged for their heinous acts.