The Murder of Samantha Walsh
Canadian True Crime
00:00
Why Michael Lewis Refused to Take a Polygraph Test
Samantha's uncle Gordon Walsh wrote that he wondered why 16-year-old Michael Lewis would refuse if he had nothing to do with Sam's disappearance. A polygraph test only indicates a change in stress level, and whether or not that change may have been caused by lying is completely down to subjective interpretation. Their results are not admissible as evidence in Canadian court, but polygraphs are still used as an investigation strategy by law enforcement.
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