Crime and violence have been a part and parcel of human life. From Alexander’s conquests all over the world to the blood sports in Roman Colosseum, the human brain often displays a strange affinity towards acts of violence. The Nazi concentration camps survivors recount some of the most horrific crimes which many find hard to comprehend. Apart from stories of organized crimes, certain individuals have become famous for their notoriety. The thought process of the convoluted mind of a criminal is hard to decipher and their deeds still haunt us. These stories of criminals, who have been named as the most vicious and dangerous, presented in this section, will certainly intrigue you.