An intense thriller from the outside, but full of suspenseful events!

A very surprising mystery-thriller from the 60s that I usually won't write reviews for the old flicks, but for this one an exception. The film was based on the book of the same name that sets in the early 19th century. Since it was a short tale the film was just a 80 minutes long. It looked like the film 'Take Shelter', but while progressing its narration totally impressed me with the uniqueness in the development area. However, I did not understand the final scene after all those twists, yet it is obvious an agenda that... read the rest.