Orhan Aksoy, known as the "Shooter Killer", Süleyman Aktaş, who is remembered as the "Civic" for his murders with nails, Abdullah Aksoy, the "Cumra Monster", and Hamdi Kayapınar, who defines himself as a hunter and the people he kills as prey, from his childhood until today, his life and inner world. , the way of committing a crime and its motivation are discussed.