At 3 hours long this is a comprehensive and well put together documentary divided into manageable sections. It is extensively researched and very well put together. it covers the impact of pre-christian folk lore and its impact in the genre of Folk Horror in film. There are interviews with directors and experts on iconic films such as Witchfinder General and The Wicker Man and 200 other films. It also acknowledges the impact of writers such as Nigel Kneele and his influence upon storytelling. There is also an interview with Geraldine Beakin from the Atlantis Bookshop. This is the most comprehensive study on this genre and manages a feat of being comprehensive, informative, and absorbing. Highly recommended.
Some interesting stuff in here. But lets be honest it is far too long and the points being made by the interviewees often repetative.
Far better to assess your subject and have a realistic view of the tolerances of your audience and make a movie they can actually sustain their concentration for . If that means ( at worst) leaving some subjects out or ( at best ) releasing two movies instead then so be it. As it is you will be pummeled into indifference long before the movie finally finds its ending.