When three emergency room patients die mysteriously all at once under his care, Mark clashes with his father, a hospital board member, over his contention that he saw several tiny snake-like creatures in the equipment -- but neither is unaware of the sinister force present that coincides with the arrival of a sickly elderly woman. Elmer, Marian and the rest of the ""Others"" rush to help Mark after he is struck down by a phantom illness, and they discover that the missing link might be the geri...