In this episode, Abby covers the murder of Audrey Griffin, a 19-year-old athlete from Australia whose death after a night out devastated her community and quickly became a major national story. We get into who Audrey was, the timeline of that night, the investigation that followed, and the aftermath that kept the case in the public eye.

Story starts: 3:45

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Sources:

• The Sydney Morning Herald, “The fear was in me”: Wife of Audrey Griffin’s killer recounts night of terror
• 60 Minutes Australia, Audrey Griffin case coverage
• The Guardian, “Audrey Griffin murder accused found dead in Silverwater prison cell”
• NSW Local Court, “Apprehended Violence Orders”
• People, “Audrey Griffin, Australia Athlete Found Dead, Man Arrested Month Later”

In this bonus episode, Ally covers the latest update in the Gilgo Beach murders case (also known as the Long Island Serial Killer case), from Rex Heuermann’s guilty plea to the names, timeline, and case developments that have brought new attention to the women whose murders remained unsolved for years.

Story starts: 1:00

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Shoutout to Crime Junkie for covering this case in depth!

Sources:

• Reuters, “Long Island architect pleads guilty to ‘Gilgo Beach’ serial killings” (April 8, 2026)
• Associated Press, “Rex Heuermann pleads guilty to murder charges and admits he killed 8 women in the Gilgo Beach case” (April 2026)
• Associated Press, “Takeaways from the Gilgo Beach case as Rex Heuermann pleads guilty to 7 murders and admits to an 8th” (April 2026)
• ABC News, “Gilgo Beach murders: A timeline of the investigation”
• People, “Her Disappearance Led Authorities to the Gilgo Beach Serial Killer. So Why Isn’t Shannan Gilbert’s Death Considered a Murder?”

In this episode, Ally covers the murders of the Gustafson family in Townsend, Massachusetts, a case that is often remembered for its most chilling details, but at the center of it all were Priscilla Gustafson and her two young children, Abigail and William. We get into the family at the heart of this story, the terrifying events that had already unfolded in another nearby home, and the trail of warning signs that came before everything escalated into one of the most haunting cases in Massachusetts true crime.

Story starts: 13:00

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Sources:

• Massachusetts Supreme Judicial Court, Commonwealth v. LaPlante, 416 Mass. 433 (1994)
• Massachusetts Supreme Judicial Court, Commonwealth v. LaPlante, 482 Mass. 399 (2019)
• WBUR, “Mass. High Court Rejects Early Parole Petition For Man Convicted Of Murder In 1987”
• NBC Boston, “Man Convicted of Killing Woman, 2 Children Asks for Earlier Parole”
• Oxygen, “Daniel LaPlante’s Murder of the Gustafson Family Revisited”
• Dark Downeast, “The Infamous Case of Daniel LaPlante (Massachusetts)”
• Crime of the Truest Kind, “The Truth About The Crimes of Daniel LaPlante, Townsend, Massachusetts, with author Joe Turner”

In this episode, Abby covers the disappearance of Zebb Quinn, a case out of North Carolina that has haunted people for decades. What started as a missing persons case quickly turned into something stranger, darker, and way more complicated than it first seemed.

We get into the timeline of Zebb’s disappearance, the bizarre details surrounding his car, and the twists that kept this case alive for years.

Story starts: 5:58

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Sources:

• “Murder of Zebb Quinn.” Wikipedia, Wikimedia Foundation
• Blankenship, Mark. “What Happened to Zebb Quinn? Western NC Missing Person Case Explained.” Citizen-Times
• “He Vanished After Driving Off with a Coworker. His Car Was Later Found with a Puppy Inside and Lipstick on the Window.” Chip Chick
• “Man Admits Killing Food Network Contestant and Husband, Burning Bodies in Wood Stove.” CBS 58 News
• Dateline NBC. “The Day Zebb Quinn Disappeared.” NBC News
• Oxygen True Crime. “The Disappearance of Zebb Quinn.”
• All That’s Interesting. “Zebb Quinn.”

In our first episode, Ally covers the case of Patricia Anne Ross, a story that is heartbreaking, disturbing, and full of unanswered questions. We walk through the timeline, the investigation, and the details that make this case so difficult to forget.

Story starts: 6:03

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Also, shoutout to True Crime Couple for being one of the shows we love.

Sources:

• Orange County District Attorney press releases (2015 charge; 2018 trial; 2018 sentencing)
• City of La Palma news release (June 2015)
• MyNewsLA trial coverage (Feb. 26, 2018)
• Los Angeles Times (June 2, 2015; May 7, 2018)
• KTVU (June 4, 2015)
• Patch / City News Service reprints
• Behind the Badge OC (2016, 2018)
• Things Police See - Episode with Jim Engen
• True Crime Couple - Episode 219

Welcome to Probation Behavior. In this intro episode, meet Ally and Abby, the voices behind the show. We’re giving you a little taste of who we are, the true crime cases that first pulled us in, and the stories we still can’t stop thinking about. Before the deep dives, courtroom chaos, and cases that completely consume us, this is the perfect place to start if you want to get to know us a little better. It’s personal, a little chaotic, and very much us.

We’re so happy you’re here. Follow along, share your thoughts, send us case suggestions, or submit a case request:

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Welcome to Probation Behavior, a true crime podcast hosted by two friends who can’t stop asking “how did we get here?”

In this trailer, we’re giving you a quick peek into what you can expect each week. We cover lesser-known cases, wild twists, and the psychological layers behind the crimes that stick with you long after the episode ends.

We’re not here to just tell you what happened. We’re here to unpack why it happened, how it escalated, and what it says about people, relationships, and the systems around them.

If you love cases that unravel slowly, unexpected turns, and conversations that feel like you’re right there with us, you’re in the right place.

New episodes dropping every Thursday. Follow along, share your thoughts, send us case suggestions, or submit a case request:

Instagram: ⁠@probationbehavior⁠

⁠Join our Patreon⁠

Email: ⁠probationbehavior@gmail.com⁠

⁠Case Request Form