Firstly, when the serial killer was not found, they feel their self a little bit shocked and then they committed a second crime. Following this, when they do not arrest again, they started to feel amazing and of course, they continue their actions. However, at this point in times they start to believe that they have a something like power which is only belong to them and also they sees their self much more powerful than the law. Besides, that believe is not a sign of the psychopathy since it is a clue of the narcissistic personality trait. Secondly, the serial killer has demonstrated an extreme sexual assault potential that illustrates that the serial killers prone to attack someone sexually by in words or rape. Thirdly, the serial killer has a repetitive activity that does not carry any meaning in their activity. For example, serial killer smokes before the killing or kill with the same method. Fourthly, the serial killers do not feel anything about the victim because they see that activity as ritual. Therefore, when they direct their emotions to the victim, their activity loses the meaning. Finally, they feel a need to sign their victim or activity by means of collecting a material which belongs to the victim or eat their some part. For instance, hoarding the objects which belong to the victims like watches or eat their body part of…