In the Severin Films 2021 Folk Horror deep dive documentary Woodlands Dark and Days Bewitched, many writers on the subject pointed to three British films that set the template for the Folk Horror film genre; The Blood on Satan's Claw (1971), The Wickerman (1973), and 1968's Witchfinder General.

Set in the 1600's during the English Civil War, Witchfinder is a work of fiction, but uses the stories a Matthew Hopkins, a real life, so called "Witch Hunter" who went about the countryside and... lets just say greatly outdid the horrors of Salem, MA.

Vincent Price, often know for more campy roles, is top notch as Hopkins. Gone is the charm and winks to the audience. Price's Hopkins is pure evil, a man drunk with power and self loathing. Compared to so many other horror films of the era Witchfinder General doesn't pull it's punches, and deserves to be considered a folk horror classic.