"Don’t Open Till Doomsday" is an episode of the original The Outer Limits television show. It first aired on 20 January, 1964, during the first season.
"The greatness of evil lies in its awful accuracy. Without that deadly talent for being in the right place at the right time evil must suffer defeat. For unlike its opposite good, evil is allowed no human failings, no miscalculations. Evil must be perfect or depend upon the imperfections of others."
In the 1920s, a pair of newlyweds receive a mysterious gift. 40 years later an eloping couple arrive at the house. After the bride disappears, her dominating father arrives to discover that to free his daughter, he must help an alien who plans to destroy the entire universe.
"Without that deadly talent for being in the right place at the right time evil must suffer defeat, and with each defeat doomsday is postponed for at least one more day."