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Investigating Rick Van Thiel
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Investigating Rick Van Thiel

Sandy Dominguez, the mother of Randy David Valenzuela, Jr., discusses the investigation into her son's treatment by Las Vegas "doctor" Rick Van Thiel. Las Vegas Metro Police Department Detective Ken, who wished to keep his appearance hidden, investigated Valenzuela's death and "had a lot of compassion" while working the case, Dominguez said.