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How detectives got 'The Package Killer' to confess to decades-old murders

The so-called Package Killer goes from defensive to repentant during nine hours of confessions recorded during four visits with detectives in 2022.

Christine Byers (KSDK)

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Published: 9:54 PM CDT September 7, 2023
Updated: 1:02 PM CDT September 12, 2023

Saundra Kuehnle is pretty blunt when it comes to talking about the apology letter a serial killer wrote to her and the families of his other victims.

“It's not even valuable enough to use for an (expletive) wipe,” she said. “That's how I feel about it.”

This month marks the one-year anniversary of Gary Muehlberg being publicly identified and charged with the murder of Kuenhle’s 19-year-old daughter, Robyn Mihan, as well as three other women during the early 1990s. All of his victims were found in various containers and packages, earning Muehlberg the moniker The Package Killer.

The I-Team reviewed more than nine hours of videotaped confessions gathered during four visits with detectives, along with the letters he wrote to his victim’s families and detectives.

He titled his letter, “Searching the Soul,” and wrote, in part: “I must say and want to say how truly sorry I am for what I have done. My prayer for you today is that you can someday find it in your heart to accept it.”

“He’s only sorry because he knows he's going to rot in hell,” Kuehnle said.

Kuenhle’s daughter, Robyn, as well as Muehlberg’s other victims, vanished from the Cherokee Street Stroll as it was known about three decades ago.

Robyn had just given birth to her second child two weeks before her body was found stuffed between two mattresses along an O’Fallon, Missouri, highway.

“Thirty-three years, and it's still like it was yesterday,” Kuehnle said. “Especially when you have to identify the body of your daughter and to see how he how she was tortured.”

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