"Serial Murder.". FBI, n.d. Web. 29 Oct. 2013. Pemment, Jack, M.A.
— Crime Library on TruTV.com. N.p., n.d. Web. 12 Nov. 2013. "What Motivates Serial Killers To Kill | Twisted Minds - a Website about Serial Killers."
Ruane., Sniper: Inside the Hunt for the Killers Who Terrorized the Nation., Random House, 2003, pg.119 11. Kennedy, Helen. "D.C. SNIPER LEAVES CALLING CARD FOR COPS." New York Daily News 21 Nov. 2002: n. pag. Daily News.
"fidelity, n.". OED Online. September 2013. Oxford University Press. http://www.oed.com/view/Entry/69888?redirectedFrom=fidelity (accessed December 03, 2013).
FBI. Retrieved November 12, 2013, from http://www.fbi.gov/about-us/history/famous-cases/the-lindbergh-kidnapping What is the AMBER Alert System?. (n.d.). AMBER Alert System: America's Missing: Broadcast Emergency Response. Retrieved November 11, 2013, from http://amber.ny.gov/ kidnapping.
30 Nov. 2013. Powers, Dave. "JFK The Assassination." CBSNews. CBS Interactive, Nov. 2013. http://www.cbsnews.com/pictures/jfk-the-assassination/13/.
Retrieved from Http://definitions. Uslegal. Com/t/third-degree-murder/ on Nov 26, 2013 Freeman, Shanna . 2013 "How serial killers work." How stuff works 1(1):1-1.
In a world that has given us such horrific criminals such as Charles Manson, Jack the Ripper, and Ed Gein, there is one case that still plagues citizens. Between the late 1960s and the early 70s, San Francisco citizens found themselves in a state of panic. A serial killer was on the loose. Known for murdering female, and young couples, the Zodiac Killer claimed the lives of at least seven victims. In the process, the Zodiac sent in letters to the local newspaper about the murders.
ProCon.org. 13 Apr. 2009. Web. 12 Feb. 2013.