The Unforgotten, Season 2: Unnatural Causes investigates the worst serial killer in Dallas history. In 2016, healthy, active women began to drop dead in Dallas's most exclusive senior living communities and their own homes. Because of their age and where they lived, officials assumed that heart attacks, strokes and other natural causes were to blame. It wasn't until years later, after a woman survived and told police she'd been attacked by a man who tried to smother her with a pillow, that police realized what was actually happening. One of Texas's most prolific serial killers had gone completely undetected. Why were officials so quick to brush aside the deaths as natural? How did the killer use the cracks of a broken system to target some of society's most vulnerable people? And how can we be sure it doesn't happen again?

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Sharing a special preview episode from Final Days on Earth with Claire St. Amant. Greg Williams was a successful tech entrepreneur living a quiet life with his family in a Fort Worth suburb. Until one night in 2011, when his whole world came crashing down. Greg had been shot in cold blood, as he lay sleeping in bed. His wife and business partner, Michele, called 911, alleging an intruder had fired the fatal shot. What really happened to Greg Williams, and who is responsible for his death? Join award-winning journalist Claire St. Amant as she re-examines the complicated murder investigation, where Greg's case is only the beginning.

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Our investigation brings us to Jerry Mack's front door.

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Our investigation brings us to Jerry Mack's front door.

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A sports talk show changes the conversation about Jake Feldt, the estranged son-in-law of murder suspect Jerry Mack Watkins

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Jerry Mack's son-in-law breaks his silence in a tell-all interview about Shelley Watkins' murder and the inner workings of the Watkins family.

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Jerry Mack's son-in-law breaks his silence in a tell-all interview about Shelley Watkins' murder and the inner workings of the Watkins family.

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An interview with the county sheriff reveals a tantalizing lead in the quest to get justice for Shelley Watkins.

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An interview with the county sheriff reveals a tantalizing lead in the quest to get justice for Shelley Watkins.

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Shelley's sister Sandy takes matters into her own hands following the collapse of the murder case against her former brother-in-law, Jerry Mack.

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