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“Deadly Omission”: Dateline Reports on Carol Marlin & Kasi Peek Homicides October 25 2024

Ryan Gill

On October 25, 2024, Dateline NBC will air an episode titled “Deadly Omission,” where correspondent Andrea Canning dives into the harrowing case of John Peek. Peek, an IT specialist from Georgia, was suspected of orchestrating the murders of two of his wives—Carol Marlin and Kasi Peek—in a twisted plot for financial gain through life insurance policies. This episode promises to reveal the shocking details surrounding Peek’s actions, the profound investigations that followed, and how his criminal activities eventually came to light.

This feature article will explore the case in depth, focusing on the events that led to the murders, the evidence uncovered by investigators, and the eventual outcome of John Peek’s trial.

The Mysterious Deaths of Carol Marlin and Margaret Ginn

The case against John Peek began in Marietta, Georgia, in June 1996, when his common-law wife, Carol Marlin, was reported missing. According to Peek, Marlin had gone to dinner with a friend, Margaret Ginn, but never returned home. Concern quickly escalated when police discovered the bodies of both Marlin and Ginn inside Ginn’s home. Both women had been brutally bludgeoned, a method that pointed to a crime driven by personal animosity.

What made the case particularly complex was the discovery of a torn Lockheed Martin invoice at the crime scene, an unusual clue that suggested a connection between the two women’s deaths and Peek’s professional environment. Investigators immediately began questioning Peek about his relationship with Carol and his possible involvement in the murders. Though suspicions were high, especially after it was revealed that Marlin had made Peek the primary beneficiary of a $700,000 life insurance policy shortly before her death, there was little physical evidence tying him to the scene. Without conclusive proof, authorities were forced to leave the case unsolved, allowing it to grow cold for years.

The Murder of Kasi Peek and the Cracks in John Peek’s Story

Nearly a decade later, in 2005, John Peek’s second wife, Kasi, was found shot to death in their home in Smyrna, Georgia. Her murder bore an eerie resemblance to the earlier deaths of Marlin and Ginn, with financial motives once again taking center stage. As investigators looked into Kasi’s death, they discovered that Peek had been paying for her life insurance, even during their estrangement, raising red flags about the possibility of premeditation.

John’s nonchalant attitude during police questioning only heightened suspicions. At one point, he even remarked, “As a matter of fact, I was the primary suspect in my last wife’s murder. How about that.” Despite his seemingly cavalier demeanor, detectives were now beginning to see a disturbing pattern emerge—one in which Peek repeatedly stood to gain financially from the deaths of those closest to him.

As investigators delved deeper into Kasi’s murder, they noted the similarities between her case and that of Marlin and Ginn. The financial angle became a focal point, with detectives discovering that Peek had been double paying Kasi’s life insurance premiums to ensure it remained active, even as their relationship crumbled.

The Investigation and Legal Battles

The investigation into both murders took years of painstaking work, as police struggled to find definitive physical evidence that could link Peek to the crimes. However, the financial evidence began to paint a clearer picture. The discovery that Peek had maintained Kasi’s life insurance while their marriage was in disarray suggested a premeditated intent to profit from her death, much like he had with Marlin.

The mounting circumstantial evidence, combined with a renewed investigation into the earlier murders, led to Peek’s arrest. He was eventually charged with the murders of Carol Marlin, Margaret Ginn, and Kasi Peek. In a surprising turn of events, in April 2007, Peek pleaded guilty to all three murders, a move that spared him from a lengthy trial but resulted in him receiving three life sentences without the possibility of parole.

The Final Outcome: Justice for the Victims

John Peek’s admission of guilt brought some measure of closure to the families of his victims. For years, they had endured the pain of unanswered questions, particularly in the case of Carol Marlin and Margaret Ginn, whose murders had remained unsolved for nearly a decade. The guilty plea was a victory for investigators who had worked tirelessly to connect the dots between the murders, despite the lack of direct evidence.

John Peek’s sentence of life imprisonment without parole ensured that he would never be able to harm another person. However, the emotional scars left on the families of his victims are immeasurable. The financial gain he sought by taking the lives of his wives only highlights the dark undercurrents of greed and betrayal that fueled these crimes.

A Gripping Episode

Dateline NBC’s “Deadly Omission” will offer a comprehensive look into the case of John Peek, presenting interviews with investigators, family members, and those close to the investigation. Viewers will gain insight into the shocking details of the case, the chilling twists, and the eventual unraveling of Peek’s carefully constructed facade. This episode is a must-watch for those interested in true crime, as it underscores the lengths to which some individuals will go in pursuit of financial gain, and the ultimate price they pay when justice catches up with them.

Catch Dateline NBC on October 25, 2024, to explore the unsettling true crime story behind John Peek’s deadly omission.

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