Former inmates detail Rebecca Lynn O'Donnell’s failed murder-for-hire plot: "I said something because I felt like somebody else might actually go through with the plan, and I care about other people's lives."

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Could footage from security cameras previously installed by Linda Collins-Smith ultimately help lead to finding her killer?

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A former Arkansas senator was murdered by someone she knew. Who is the killer?

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— 20/20 (@ABC2020) October 25, 2022