12 Sure Signs of a serial killer: Know them Before You Encounter a Serial Killer!

9 Sure Signs of a serial killer: Know them Before You Encounter a Serial Killer!

Do you remember how many different people you have met in your entire life? If your contacts are less, it will be probably easy for you to know them all. One thing which we all have noticed and even science proves is that nobody is the same in this world.

Different people have different natures, and every one is unique. Some may argue that identical twins are the same. No doubt they are, but only genotypically. They both may differ in nature.

Some are calm and pleasant, and some are jovial, some are depressing, some are quirky, while some are very dangerous. One of the many dangerous people is a serial killer. Yes, you read it right. Serial killer! They have always been in the limelight, whether it be a real newspaper or fictional movies.

You never know the intentions of the person next to you. The same goes for serial killers. You can not identify a serial killer just by face. They may look normal and might be very friendly, but there are some signs that drop them in the category of serial killers. And for your safety, you must know those signs.

But before that, you should know what defines a serial killer?

The Psychology Behind Serial Killers

A serial killer is a psych person who tortures people and murders them. They murder people periodically. Serial killing is a psychological disorder that often involves sexual abuse. The reason for serial killing varies with different serial killers.

For some serial killers, it may be because of anger, while for some, it may be fun, thrill as well pleasure-seeking. Psychopathic behaviour is a common trait among all serial killers. It can be said that all serial killers are psychopaths, but not all psychopaths are serial killers.

Signs of a serial killer

Serial killer. Sounds scary? But you will be more surprised by knowing the signs of a serial killer.


Wait! Wait! Don't be quick to think that if someone is intelligent, he/she has to be a serial killer. If this were true, then all our scientists and scholars would be a serial killer. Okay, jokes apart. Intelligence is considered a sign of the serial killer because most of the top serial killers have shown high IQ.

Here are some facts to prove that:

Serial killers like John Wayne Gacy and Ted Bundy had an IQ of around 113, and Ed Kemper had an IQ of 140. But unfortunately, they end up using their intelligence to manipulate and convince various people to do things for them.

Serial killers are intelligent but are intelligent, not always serial killers.

Torturing small animals:

If you find someone torturing small animals, it is the strongest sign of a serial killer. It is observed among the top serial killers that they kill small animals when they are kids or even in adulthood. Some may cut down the wings of flies, while some may brutally kill small animals like rats, dogs, etc. The reason behind killing animals is their attempt to control lives. The main motive of every serial killer is to control others' life.

Antisocial behaviour:

One of the biggest warning signs a serial killer shows, especially as a child, is his/her antisocial behaviour.

However, it may not be confused with being introverted. There are people you can't adjust to easily in society or groups. In the case of serial killers holding on to rules is a difficult task. They usually have no friends and are very aggressive.


Most of the serial killers exhibit lazy behaviour. They often don't stick to their normal jobs. Employers usually fire them very soon just because they are not into their job. However, this is not a very strong sign of serial killers. Shiftless nature can also be due to lack of interest or lack of physical fitness.

Playing with fire:

If a person's games involve violence, it is definitely not a good sign. The most dangerous is playing with fire. If they put things on fire just for no reason, it shows that there is a storm emerging inside. The fire itself is a sign of violence and a person who burns places, houses, or even toys, is not something to be ignored.

Serial killer genes

A person's nature and behaviour are no doubt influenced mostly by parents and family members. Many serial killers are born with the serial killer genes. If someone in the family belongs to that trait, it increases the chance of the child being a serial killer. The serial killer genes may have passed on to the child. This may be more like a reason than a sign of the serial killer. But family tensions do affect a child's mental state. A child in an abnormal family is more prone to becoming a serial killer.

Also read about: Alert! Not for Weak Hearted People! How Do Serial Killers Choose Their Victims?


What makes a human different from other organisms are emotions. Though some may not be able to express their emotions, they do have feelings inside. Being totally emotionless is the deadly sign of a serial killer. This is the reason that serial killers murder numerous people and still do not feel anything. Serial killers are not even guilty of their actions. The only emotion they may feel is sexual and hatred.

Predatory aggression

Another sign that a serial killer shows is predatory behaviour. It can be understood by comparing it to the aggressive behaviour of carnivores. Like predatory animals, serial killers to kill people because they consider it as their need. A person who has a predatory personality believes that the other person is inferior to him, and so they try to control others' life.

High Sexual urge

Most of the serial killers were found to have a high sexual urge. They often rape their victims before murdering them. One such famous example is Seattle serial killer. His real name was Gary Gene Grant. He is often referred to as Seattle's forgotten serial killer. He is called Seattle serial killer because of his notorious activities in Seattle.

The Seattle serial killer raped almost every victim before he murdering them. Most of his victims were teenagers.