With the ice on a remote Minnesota lake thick enough to need a saw to cut through it, “Barb” (Dame Emma Thompson) heads, replete with her handy little heated hut, to do some fishing. Her solitude is disturbed by a young woman who is forcibly returned to a nearby house, and upon some sleuthing she discovers that not only has she been kidnapped, but that her captor (Marc Manchaca) and his even more desperate wife (Judy Greer) have a dastardly plan for her that it’s going to fall to this ill-equipped woman to thwart. There are no phones and they are both armed, dangerous and soon aware of her pre...