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Dr John Evelyn Thorndyke
Dr John Evelyn Thorndyke was a brilliant detective who used his skills as a medical doctor and forensic scientist to solve crimes. He was able to gather evidence from the smallest details, such as dust and pond weed, and use it to piece together the clues and identify the culprit. Freeman ensured that Thorndyke's methods were practical by conducting all experiments mentioned in the stories himself.