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Edgar Piston was a member of the All-American CRY Foundation who served as a witness for Avery Richman's murder trial in the United States. He was invited aboard Richman's special express train, the Silver Star, to participate in a retrial.
- His surname likely references the piston that allows the movement of a steam locomotive.
- Coupled with Allan Cylinder, his given name may be a reference to poet Edgar Allan Poe.
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