Marvin Lee Irvin: The St. Joseph Policeman Turned Predator
Overview
Marvin Lee Irvin, a former police officer in St. Joseph, Missouri, traded his badge for a life of violence that culminated in a series of murders spanning more than a decade. Between 1979 and 1990, he killed three women, using his knowledge of law enforcement to evade capture for years. His crimes began with the disappearance of his young sister-in-law, a case that remained a cold and troubling mystery. Over a decade later, the disappearances of two more women in St. Joseph led investigators to Irvin's door. A crucial tip and forensic evidence finally unmasked the one-time public servant as a serial killer. To avoid a potential death sentence, Irvin confessed to all three murders, leading police to the remains of his two later victims but leaving the family of his first to forever wonder where their loved one rests. He was sentenced to life in prison without the possibility of parole.
Early Life and Law Enforcement Career
Marvin Lee Irvin was born on May 4, 1949, in St. Joseph, Missouri. Neighbors remembered him as a quiet and polite boy growing up. After graduating from Highland High School in nearby Highland, Kansas, Irvin joined the St. Joseph Police Department in 1970. His career in law enforcement was short-lived; he resigned within months for reasons that included reported drug use.
Following his departure from the police force, Irvin began to accumulate a criminal record. In 1971, he was fined for pulling a gun on someone in a bar, and in 1973, he was convicted of assault. A more serious accusation arose in April 1974, when he was arrested for allegedly abducting a 15-year-old girl from a drug store in St. Joseph and raping her in Kansas. The charges were ultimately dropped when the girl declined to testify against him.
Around this time, Irvin began a relationship with another teenager, Ruth West. When she was 15, she gave birth to their son. Ruth would later describe their relationship as abusive and emotionally manipulative. In March 1979, the couple married in Ventura, California, but their relationship quickly deteriorated upon their return to Missouri, with Ruth claiming Irvin was physically violent toward her.
The Murder of Micki Jo West
In August 1979, fearing for her safety, Ruth West took her young son and fled from Irvin, taking refuge in a motel in Elwood, Kansas. She confided her location to only a few trusted people, including her 19-year-old sister-in-law, Micki Jo West. Micki, a nurse's aide at the St. Joseph State Hospital, was close to Ruth and had become a target of Irvin's anger.
On the morning of September 11, 1979, Micki Jo West left for her job at the hospital but never arrived. She disappeared on her way to the bus stop. That same day, Irvin and some friends located Ruth at the Kansas motel and forcibly took her and her son. Suspicion immediately fell on Irvin for Micki's disappearance, as her family believed he was involved. He was questioned by police, but he passed a polygraph test, and investigators failed to find sufficient evidence to charge him, a failure later attributed to mistakes like not searching his vehicle.
For years, Micki's case went cold. The mystery was deepened by a series of anonymous letters sent to St. Joseph police and media, beginning in 1986. The letters claimed Irvin was the killer, with some providing taunting, cryptic details. Police now believe Irvin wrote the letters himself.
The Murders of Patricia Rose and Crystal Simmons
After his first wife, Ruth, divorced him, Irvin moved to Iowa for a time, where he had further run-ins with the law, including a police chase that resulted in a probation sentence. He eventually returned to St. Joseph in 1990.
On September 1, 1990, Patricia "Patty" Diane Rose, a 31-year-old meat cutter, took a break from work and visited a local bar, Brew's Blue Town. She was never seen again. Her mother reported her missing on September 17 after being unable to reach her for days.
Just over a month later, on October 29, 33-year-old Crystal Lynn Simmons vanished after being seen at another downtown bar. During the investigation into her disappearance, police received a critical tip: Simmons was last seen with Marvin Lee Irvin, and the tipster urged them to inspect his truck.
The Victims
- Micki Jo West, 19 — disappeared on September 11, 1979, in St. Joseph, Missouri. A nurse's aide described as a close friend to her sister-in-law, she was killed because she knew the location of Irvin's estranged wife. Her body has never been recovered.
- Patricia Diane Rose, 31 — last seen on September 1, 1990, in St. Joseph, Missouri. She was a meat cutter at a local pork plant. Her skeletal remains were found in a Kansas cornfield two months after she vanished.
- Crystal Lynn Simmons, 33 — disappeared on October 29, 1990, from St. Joseph, Missouri. She was last seen leaving a downtown bar with Irvin. Her remains were discovered in the same cornfield as Patricia Rose, just yards away.
Investigation and Capture
Acting on the tip, investigators obtained a warrant to search Marvin Irvin's vehicle. Inside, they discovered a partially wet towel soaked in blood. Forensic testing confirmed the blood belonged to Crystal Simmons, providing the direct link detectives needed. Irvin was arrested.
The investigation soon led police to a rural cornfield near Highland, Kansas, not far from where Irvin had grown up. On November 11, 1990, hunters discovered skeletal remains that were later identified as Patricia Rose. A wider search of the area the following day uncovered the remains of Crystal Simmons buried in a shallow grave about 400 yards away. Autopsies determined that both women had died from multiple blows to the head, or blunt force trauma. A hammer found in Irvin's home was identified as the murder weapon.
While in jail, Irvin initially denied any involvement. However, as the evidence mounted, and with detectives pressing him on his connection to the long-unsolved disappearance of Micki Jo West, his story changed.
Trial and Sentence
Faced with overwhelming evidence for the murders of Rose and Simmons and the possibility of a death sentence, Marvin Irvin chose to cooperate. He confessed to killing all three women. He admitted to bludgeoning Rose and Simmons to death after getting into arguments with them on separate occasions.
He also finally confessed to the 1979 murder of Micki Jo West. He claimed he confronted her to find out where his wife, Ruth, was hiding. In his telling, an argument ensued, and after Micki made a derogatory racial remark, he became enraged, stabbing her four times and shooting her twice before burying her body.
In October 1991, Irvin pleaded guilty to two counts of first-degree murder for the deaths of Patricia Rose and Crystal Simmons, and one count of second-degree murder for Micki Jo West. In exchange for his plea, prosecutors agreed not to seek the death penalty. He was sentenced to three consecutive life terms in prison without the possibility of parole. As part of his plea deal, Irvin agreed to lead investigators to Micki's body. He directed them to a farm in Kansas, but despite extensive searches, her remains were never found.
Aftermath and Legacy
Marvin Irvin is incarcerated at the Jefferson City Correctional Center in Missouri. His confession brought a legal end to three murder cases that had haunted St. Joseph, but it offered incomplete closure. The families of Patricia Rose and Crystal Simmons were able to lay their loved ones to rest, but the family of Micki Jo West never could. Investigators have expressed skepticism about Irvin's cooperation, suspecting he may have enjoyed toying with them and might have moved her remains from their original burial site.
The case of Marvin Irvin serves as a chilling reminder of how a figure of authority can become a predator. His brief time as a police officer gave him a veneer of respectability and an understanding of investigative procedures that may have helped him evade justice for over a decade. The disappearance of Micki Jo West was featured on the television show *Unsolved Mysteries* before Irvin's arrest, and an updated segment aired after his conviction, bringing national attention to his crimes.
