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Ben Smith
County attorney for Sac County, Iowa, who prosecuted the case and offers first-hand investigative and courtroom details about the Mark Koster investigation.
Best podcasts with Ben Smith
Ranked by the Snipd community
Jan 20, 2026
• 48min
The Man Beneath the Floorboards (Mark Koster)
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In a gripping discussion, Ben Smith, Sac County's attorney, shares the harrowing tale of Mark Koster, who was declared dead long before his remains were discovered mummified in his basement. Smith illustrates how a mysterious note and a neighbor's tip about a tall man with a Pomeranian led to uncovering the truth. As they dive into forensic details, the chilling confrontation with suspect John Green reveals a tangled narrative of self-defense and concealed crime, culminating in a conviction that left the community shaken.
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