The Wicked Woods

An unhappily married woman and her lover take a weekend retreat at a cabin in the woods to discuss their future plans, when they find themselves besieged by forces outside the cabin, appearing and then disappearing within the house -- in the fog outside, they make themselves visible as a strange old man, a nude woman, and little children. Only the sacrifice of one of them can save them on a night when the portals of another dimension have opened to take their souls forever.