Driven by madness and poverty, a sister and brother murder their farmhouse guests in order to survive. Minnie and Ernest Tucker, mid twenties,brother and sister, live on a moorland farm in Somerset. The farm has failed and they make a meagre living taking in stray bed and breakfast guests. When a couple, Ben and Carol from London book in for the night, Ernest takes a dislike to Ben and kills him with an axe. Carol flees, but Ernest catches and kills her with a pitch fork. One by one they pick off the guests and Ernest murders them for their money. Meanwhile Minnie to protect her brother, buries the bodies at the bottom of a field making in the end Seven Crosses for them!