There are murderers and then there are serial killers. Usually, there’s a motive behind any murder, however when it comes to serial killers, motive gets replaced by a psychological urge to kill; often without any logical reason or enmity against the victim.
But who are these serial killers? What motivates them to commit murder so many times? The reasons can differ, but the exact reason still remains a mystery despite several researches.
The fact that makes serial killers interesting is that outwardly they seem like perfectly normal like any other member of the society, around whom others feel comfortable and may sometimes even be drawn to. However, deep within them rests the tendency to act out in unexpected ways that are often aggressive and volatile.

Although, the world has known many psychopathic serial killers some of them are so shocking, that there cases need to be picked out from the rest. Here are 10 most psychopathic serial killers the world has ever witnessed:

1. Pedro Alonso Lopez

Photo: YouTube Screengrab

Photo: YouTube Screengrab

The man was a Colombian serial killer, accused of raping and killing more than 300 girls across South America.

Modus Operandi

Lopez lured the girls to secluded areas or inside unoccupied buildings where he raped each of them before killing them by a range of brutal methods, primarily strangulation.

Arrest

The Columbian serial killer was arrested when an attempted abduction failed and he was trapped by market traders. He confessed to over 300 murders but the police only believed him when a flash flood uncovered a mass grave containing many of his victims. A total of 53 bodies were discovered.

Imprisoned in 1980 he served 18 years before being released from a Ecuadorian prison and was deported to Columbia where he was rearrested and in 2002 was sentenced to life.

2. Dr Harold Shipman

dr_harold_shipman

Dr Harold Fredrick Shipman was a English doctor and is one of the world’s most dangerous serial killers in recorded history, proven to have been responsible for up to 250 murders.

After the high death rate in his area and the large number of cremation forms for elderly women that he had countersigned, people began to suspect Shipan. Several bodies were later exhumed and postmortems revealed diamorphine within their system.

Modus Operandi

Shipman injected fatal doses of the drug in a huge number of patients, causing their death. He then forged their wills so he could inherit large sums of money and completed cremation requests to destroy the victim’s bodies.

Arrest and death

After investigations, Shipman was arrested by the police and the trial judge sentenced him to 15 consecutive life sentences and recommended that he never be released. Shipman later hanged himself in January 2004 in his cell at Wakefield Prison.

3. Javed Iqbal

javed_iqbal

Javed Iqbal Mughal was a Pakistani serial killer who was found guilty of the sexual abuse and murder of 100 boys. The shocking case of Iqbal came to light after he himself sent a letter to police confessing to the murders of 100 boys, all aged between 6 and 16.

Modus Operandi

In the letter, he claimed to have strangled and dismembered the victims – mostly runaways and orphans living on the streets of Lahore – and disposed of their bodies using vats of hydrochloric acid.

Arrest and death

In 1999, Iqbal was arrested by the police and later sentenced to death by hanging. But was found dead in his cell in 2001 before the execution could be carried out.

4. Gary Ridgway

Photo: YouTube

Photo: YouTube

Ridgway confessed to killing at least 70 women in Washington state throughout the 1980’s and 1990’s. He avoided the death penalty by providing detailed confessions and leading police to the dumping sites of his victims, five of whom he dumped in the Green River which lead the press to nickname him “The Green River Killer”.

Modus Operandi

He used to lure women and then kill them.

Arrest

He was arrested in 2001 and was convicted of 49 murders and sentenced to life in prison without parole.

5. Tommy Lynn Sells

Photo: YouTube

Photo: YouTube

Sells reportedly killed at least 70 people. He is considered one of the most dangerous offenders in Texas and has been convicted of several brutal murders between 1985 and 1999.

Modus Operandi

He used to fix the target and later attack the victim.

Arrest

Sells was eventually captured after breaking into the bedroom of a 10-year-old girl, stabbing her, and leaving her for dead. He was sentenced to death and reportedly remains on death row at a high security prison in Livingston, Texas.

6. Andrei Chikatilo

andrei-chikatilo

Also known as ‘The Butcher’. He once said, “When I used my knife, it brought psychological relief. I know I have to be destroyed. I was a mistake of nature.” He was responsible for sexually assaulting, killing and mutilating 53 women and children between 1978 and 1990 in Russia.

Modus Operandi

After getting hold of the victims, he used to brutally kill them with a knife.

Arrest

After being captured in 1992, he was ordered to be killed by a firing squad in 1994.

7. Cyanide Mohan

cyanide-mohan

Anand Kulal aka Cyanide Mohan was a primary school science teacher who allegedly killed 20 women in a span of 5 years.

Modus Operandi

Mohan used to look for women with middle or lower-income backgrounds in bus stops and become friendly with them. Soon after, he would propose marriage to them and then murder them by giving cyanide.

Arrest

He was arrested in 2009. A Mangalore court had convicted him for the murder of 20 women.

8. Richard Ramirez

richard-ramirez

He was an American serial killer and Satan worshiper who terrorized Los Angeles between 1984 and 1985.

Modus Operandi

Ramirez broke into the homes of many of his victims and then shot, stabbed and mutilated them. His victims ranged between the ages of a nine year old girl to a married couple in their late sixties.

Arrest and death

He was arrested in 1985 and was sentenced to death and remained on California’s death row for 23 years until he died of complications from B-cell lymphoma in June 2013.

9. Dennis Raider

dennis-raider

He murdered 10 people in Kansas between 1974 and 1991. Obsessed with notoriety, Raider sent taunting letters to police under the name BTK which stood for ‘Bind, Torture, Kill’.

Modus Operandi

Before killing, Rader stalked his victims and then broke into their homes, then bound their limbs before strangling them.

Arrest

He was arrested in 2005 and is serving 10 consecutive life sentences with an earliest possible release date of February 26, 2180.

10. Charles Edmund Cullen

He worked in many hospitals but kept switching jobs as he was fired for suspicious behaviour from many of them. He confessed to murdering 40 elderly patients in New Jersey from 1984 to 2003.

Modus Operandi

All the murders committed by him were executed by poisoning his patients to death with unprescribed medication. He stated that he wanted to relieve the patients from their suffering much like an angel would.

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