Abstract There are many different factors that contribute to the murderers conduct for each specific case might be helpful when determining the most appropriate way the criminals should be treated through the criminal justice system There are various reasons why Murderers might decide to kill including but not limited to passion anger and greed Murderers conducts may be influenced by many environmental psychological and biological factors This paper will describe the convicted murderer Rodney Alcala This paper will describe any social environmental psychological and or biological factors that may have contributed to the murderer s behavior and explain how Application Contributing Factors to Murder Rodney Alcala was a serial murderer and rapist Rodney Alcala found fame by winning a TV dating show Saatchi 2014 Rodney Alcala has a history of violence and committing sex crimes Rodney was a convicted rapist and registered sex offender before he even started to commit murders Rodney Alcala committed his first known crime in 1968 Rodney Alcala was spotted luring an eight-year old girl into his apartment and his suspicious manner alerted a bystander to call the police Saatchi 2014 The girl was found raped and beaten Rodney Alcala was nowhere to be found