Slow Burn - Decoder Ring | The Red String Board Conspiracy

There’s a ubiquitous prop in just about every police procedural and conspiracy thriller: a cork board pinned with documents, newspaper clippings, and Polaroid photos, all connected by a web of red string. They go by many names, including pin boards, string boards, evidence boards, investigation walls, conspiracy walls, and walls of crazy. These boards can be vehicles of insight or manifestations of madness—and in many cases, both. But where did they come from? And can they really solve a crime?

In this episode, we try to unwind the red string board all the way to its center. To aide in our investigation, we enlist the help of Aki Peritz, a former CIA analyst and the author of Disruption: Inside the Largest Counterterrorism Investigation in History. You’ll also hear from Shawn Gilmore, editor of The Vault of Culture and creator of the Narrative String Theory project; and Dr. Anne Ganzert, author of Serial Pinboarding in Contemporary Television. And we learn about the intricacies of building a string board from production designers Michael Scott Cobb (It’s Always Sunny in Philadelphia) and John D. Kretschmer (Homeland).

This episode was written and produced by Evan Chung, Decoder Ring’s supervising producer. It was edited by Willa Paskin. Decoder Ring is also produced by Katie Shepherd and Max Freedman. Merritt Jacob is Senior Technical Director.

If you have any cultural mysteries you want us to decode, email us at DecoderRing@slate.com or leave a message on our hotline at (347) 460-7281.

Sources for This Episode

Benson, Richard. “Decoding the Detective's 'Crazy Wall',” Esquire, Jan. 22, 2015.

Coley, Rob. “The case of the speculative detective: Aesthetic truths and the television ‘crime board’,” NECSUS, May 28, 2017.

Ganzert, Anne. Serial Pinboarding in Contemporary Television, Palgrave Macmillan, 2020.

Gilmore, Shawn. “Narrative String Theory,” The Vault of Culture.

McGarry, Andrew. “Did Orwell's nightmare Nineteen Eighty-Four inspire the Snowtown murders?” Australian Broadcasting Corporation News, May 21, 2019.

Peritz, Aki. Disruption: Inside the Largest Counterterrorism Investigation in History, Potomac Books, 2021.

Peritz, Aki. “The FBI Is Going Crazy-Stringboard Crazy,” Slate, Feb. 1, 2022.

Stiehm, Jamie. “My So-Called Bipolar Life,” New York Times, Jan. 17, 2012.

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