The Baseline Killer (or Baseline Rapist) was the term used by law enforcement and media for convicted serial killer and rapist Mark Goudeau. Goudeau was involved in one of the two simultaneously occurring serial killer cases (the other being the 'Serial Shooter') which terrorized the Phoenix metro area, between August 2005 and June 2006. Goudeau was first referred to as the Baseline Rapist when Phoenix Police first announced that a light-skinned black man was sexually assaulting females as young as 12 years old at gunpoint near Baseline Road. Goudeau would later be dubbed the Baseline Killer in the spring of 2006 after investigators began to link a series of murders and armed robberies to the rapist. The perpetrator was referred to as the Baseline Rapist and Baseline Killer as the first crimes began around Baseline Road in South Phoenix, Arizona. The crimes later spread north, primarily in the North Central area of Phoenix.