Supplemental files in the Marble Arvidson case take the team on a strange journey. New interviews with Marble's friends shine a light on who he was and where he might have gone on the day he vanished. And that information shines a new light not just on Keyes, but four other disappearances in the area. 

This episode was written, researched, edited, and produced by Josh Hallmark. 
With additional research by: Jordan Taylor and Shana Wilensky.  
And research assistance by: Michelle Tooker. 

This episode features: 
Shana Wilensky and Michelle Tooker. 

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Music by: William Hellfire, La Bon, and Radical Face. 
Featured song: "I Follow Rivers" by: Marika Hackman  

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