A new episode of “Expedition Files,” airing on Wednesday, November 12, explores whether witchcraft was at work during the Salem witch trials, or if it was an undiagnosed psychological illness.

The new episode will air at 10 p.m. ET on the Discovery Channel. Those without cable can watch the show for free through Philo or DIRECTV , each of which offers a free trial to new users. Sling is another option for streaming the show, and promotional offers are available.

WATCH EXPEDITION FILES FOR FREE ON PHILO

Josh Gates travels through history on a search to uncover new evidence and answers to unexplained mysteries, and true stories that defy explanation, offering revelations and new insights.

The new episode explores whether witchcraft was at work during the Salem witch trials, or if

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