A City in Panic: The Story of Mark Goudeau, the Baseline Killer

^{Between the late summer of 2005 and the early summer of 2006, Phoenix, Arizona, was gripped by a wave of terror unlike anything the city had experienced in recent memory. Residents who once walked their neighborhoods without thought now feared for their lives. The city was being hunted by a predator who seemed to appear out of nowhere, strike with precision, and vanish before anyone could intervene. This predator would come to be known as the Baseline Killer—a name derived from Baseline Road, near where many of his attacks took place. But the horror extended far beyond a single street.}

^{The man behind these crimes was Mark Goudeau, a 41-year-old construction worker with a history of violent offenses. Over a ten-month period, Goudeau committed an extraordinary spree of crime: 86 felonies, including nine murders, multiple sexual assaults, kidnappings, and armed robberies. His victims were predominantly women, ranging from young girls to middle-aged adults, but his violence spared almost no one in its path. The city watched, helpless, as the Baseline Killer’s methods became increasingly brazen.}

Mark Goudeau

^{The attacks were characterized by randomness and brutality. In some instances, Goudeau would ambush women walking alone at night, sometimes forcing them at gunpoint into secluded areas. In others, he would rob businesses, abduct women directly from the streets, and commit sexual assaults in broad daylight. Survivors would later recount his terrifying versatility: he wore Halloween masks during assaults, impersonated a homeless man, and even posed as a drug addict, blending into the environment while plotting his next strike.}

^{Among the most shocking of his crimes was the September 20, 2005, attack on two sisters returning home from a city park. One of the sisters was visibly pregnant. Goudeau confronted them with a gun, sexually assaulted one while pressing the barrel against the other’s abdomen, and left them traumatized. This attack would later prove crucial in his capture.}

^{For months, law enforcement and the public were at a loss. Phoenix Police Department detectives spent countless hours patrolling neighborhoods, following hundreds of tips, and conducting interviews. Community meetings were held to distribute sketches based on descriptions from surviving victims, and a $100,000 reward was offered for information leading to the arrest of the Baseline Killer. Fear and frustration spread throughout the city, with residents unsure if they could safely leave their homes.}

^{The breakthrough came in August 2006. Goudeau, who was on parole at the time, was identified by parole officers as a potential match to the killer’s description. A search of his residence revealed a ski mask and a realistic toy handgun, items that would connect him to the ongoing investigation. DNA evidence from the two sisters’ assault conclusively linked him to the crime, leading to his arrest on September 4, 2006.}

Mark Goudeau's Victims

^{The Timeline of Terror}

^{The span of Goudeau’s crimes reads like a litany of violence, each event escalating in audacity and horror:}

• ^{August 6, 2005: Goudeau sexually assaulted three teenage girls near a church on 48th Street and Baseline Road. Two were molested, setting the tone for the spree that would follow.}

• ^{August 14, 2005: In the early hours, he combined sexual assault and robbery at a home on Thomas Road.}

• ^{September 8, 2005: Georgia Thompson, 19, was shot to death at her Tempe apartment, the first homicide linked to the spree.}

• ^{September 15 & 20, 2005: He sexually assaulted women in separate attacks, including the horrific confrontation with the two sisters.}

• ^{September 28, 2005: Two robberies, one at a Tempe location and one in Phoenix, were carried out in rapid succession.}

• ^{November 3, 2005: A coordinated robbery and sexual assault occurred at locations just minutes apart, with Goudeau wearing a Halloween costume and black plastic glasses.}

• ^{November 7, 2005: Three separate robberies in one evening, including firing a gun into the air as he fled, demonstrated his growing boldness.}

• ^{December 12, 2005: Tina Washington, 39, was shot in the head behind a fast-food restaurant, murdered while returning from work at a preschool.}

• ^{December 13, 2005: A woman was robbed at South Mountain Avenue.}

• ^{February 20, 2006: Romelia Vargas, 38, and Mirna Palma-Roman, 34, were found murdered inside their lunch truck. Initially thought to be drug-related, the murders were later linked to the Baseline Killer.}

• ^{March 15, 2006: Two employees of Yoshi’s restaurant, Liliana Sanchez-Cabrera, 20, and Chao Chou, were discovered dead, both shot execution-style in separate locations.}

• ^{March 29, 2006: Kristin Nicole Gibbons’ body was discovered in a parking lot, days after a local businessman noticed blood streaks.}

• ^{May 1, 2006: Another sexual assault occurred, once again outside the same restaurants where he had attacked in November.}

• ^{May 5, 2006: Phoenix police publicly acknowledged 18 crimes as part of the Baseline Killer spree, though the final count would grow to 23.}

• ^{June 29, 2006: Carmen Miranda, 37, was abducted from a self-serve carwash while on her cell phone. Her murder, captured on surveillance cameras, would be the last attributed to Goudeau.}

  
  

^{The city lived in constant anxiety as these events unfolded. Each crime was unpredictable, leaving residents unsure if the next attack would strike in their neighborhood, at their workplace, or even in their own home.}

^{During the subsequent trials, chilling details emerged. Survivors testified about the calculated cruelty of their attacks: Goudeau warned them not to look at his face, rubbed dirt over evidence to obscure his identity, and took precautions to avoid leaving physical traces. Prosecutors presented DNA and ballistic evidence tying him to nearly every crime in the ten-month spree. Ballistics confirmed that shell casings recovered from different scenes came from the same gun, while DNA evidence linked him directly to multiple victims, making the case against him overwhelmingly strong.}

^{Goudeau’s criminal history revealed a pattern of escalating violence. He had previously served 13 years for aggravated assault and armed robbery, including an assault in which he beat a woman’s head with a barbell. While friends and family described him as a loving husband and neighbor, his past painted a darker picture. During his trial, the Maricopa County Attorney’s office sought and secured the death penalty for each of his nine murder convictions, alongside 1,762 years in prison for other felonies.}

^{Yet the Baseline Killer case also exposed the failures and complexities of criminal investigations. Phoenix police had collected key DNA evidence nine months before Goudeau’s arrest but failed to analyze it promptly, allowing him to continue his violent spree. There were also false leads, including a man in Kentucky who confessed to one of the murders but later recanted, diverting critical resources. Another potential suspect, Terry Wayne Smith, was investigated but dismissed based on alibi and timing.}

^{Today, Mark Goudeau remains on death row at the Arizona State Prison Complex in Florence. His appeals have been largely unsuccessful, with the Arizona Supreme Court upholding his nine death sentences in 2016. While Goudeau will spend the rest of his life behind bars, the scars left on the victims, their families, and the city of Phoenix are enduring.}

^{The Baseline Killer case stands as one of the most notorious in Arizona history not just for the brutality and scope of the crimes, but for the way it revealed both the fragility and resilience of a community under siege. It is a stark reminder of how ordinary neighborhoods can be shattered by the extraordinary cruelty of a single individual, and how painstaking work by law enforcement, combined with survivor courage, is required to restore justice in the aftermath of such terror.}