the action of a cold night death take place at an isolated research laboratory in antarctica and involve two scientist play by eri wallach and robert culp . they have come to replace the last scientist who work at the outpost who apparently go mad and kill himself by leave a window open and slowly freeze to death . the more time our inquisitive friend spend in the outpost and the more paranoid and suspicious they become and both of their surroundings and of each other . something be definitely amiss and each night bring them close to the truth behind what really happen to their predecessor . the chill factor provide plenty of bleak snowbound atmosphere of dread and severe isolation . the acting by two lead be excellent and the final moment be utterly chill . a perfect example of brilliant tv horror that perfectly convey the fear of unseen . positive .