Marauding early 20th century motorcycle gang takes lodging in a rustic prairie farmhouse owned by two weird young sisters. We come to learn that the girls' parents are both deceased, and that "Ma" was a white woman, and "Pa" was some sort of Native-American spiritualist. Following a foiled rape attempt, the biker gang begins to rapidly lose its members under very mysterious circumstances. This creepiness transpires to the accompaniment of a rather harsh washboard/jaw-harp/kazoo music score which will have many folks ripping their hair out at the root within minutes.
Things get off to a decent enough start in this rummy little "rara avis", which introduces some colorful characters and offers enticing whiffs of what's to come. The upshot to these tantalizing prospects is an awkward and admittedly atmospheric juggling of genres which is proficiently executed on a technical level, but rather weak in exposition of its story. It's consistently watchable for the most part, chiefly by virtue of its idiosyncratic stylistic trappings, and a few solid performances from players at the budding-stage of prolific careers.
Though categorically a horror film, it probably has a stronger foothold in the revisionist/acid western subgenre, and might appeal to enthusiasts of pictures like THE SHOOTING(1966), EL TOPO(1970), and THE HIRED HAND(1971). In any case, I don't strongly recommend it.
4/10.