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Now Playing: Heather Elvis’ family remember her and Sidney Moorer is sentenced to prison: Part 11
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Now Playing: New video evidence from Moorers’ home presented at Sidney Moorer’s retrial: Part 10
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Now Playing: Tammy Moorer found guilty in Heather Elvis case, her husband’s retrial begins: Part 9
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Now Playing: Tammy Moorer takes the stand to defend herself at trial: Part 8
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Now Playing: Tammy Moorer goes to trial for conspiracy to kidnap, kidnapping Heather Elvis: Part 7
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Now Playing: Sidney Moorer sentenced to 10 years in prison for obstruction of justice: Part 6
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Now Playing: Moorers charged with kidnapping in connection to Heather Elvis’ disappearance: Part 5
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Now Playing: Sidney Moorer questioned on whereabouts on night Heather Elvis vanished: Part 4
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Now Playing: Heather Elvis and Sidney Moorer break up, friends say his wife threatened her: Part 3
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Now Playing: Retracing Heather Elvis’ last movements, police are directed to Sidney Moorer: Part 2
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Now Playing: Woman disappears soon after her affair with a married man: Part 1
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Now Playing: Margaret Rudin spends two decades in prison, appeals for a new trial: Part 10
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Now Playing: Lori Vallow's sister speaks out after J.J. Vallow, Tylee Ryan are found dead: Part 11
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Now Playing: Police investigation leads to shocking discovery: Part 10
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Now Playing: Investigators say Alex Cox’s phone points them to missing kids J.J. and Tylee: Part 9
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Now Playing: Alex Cox dies shortly after getting married: Part 8
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Now Playing: Police question Lori Vallow, Chad Daybell about kids’ whereabouts: Part 7
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Now Playing: Chad Daybell's wife dies shortly after frightening encounter: Part 6
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Now Playing: Ex-husband of Lori Vallow’s niece shot at while returning home: Part 5
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Now Playing: Lori Vallow moves to Idaho after husband’s death: Part 4