Less than a mile from where Robert Fisher’s car was found in the woods are miles and miles of underground caves. It’s thought he may have been hiding in them at one point, and written evidence found in one of them suggests that may have been the case. We investigate written messages, and dive into the caves ourselves to find out if living in them for some time is realistic. At the same time, a tip from 2004 in Canada still perplexes people with some of the most unusual investigative techniques ever used. We get to the bottom of it.

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