Five disparate individuals from across Earth are contacted by an alien intelligence (Arnold Moss). They are American newspaperman Jonathan Clark (Gene Barry), English woman Eve Wingate (Valerie French), German scientist Professor Klaus Bechner (George Voskovec), Chinese woman Su Tan (Marie Tsien), and Russian soldier Ivan Godofsky (Azemat Janti). Each is given a “box” containing capsules with tremendous power – the power of life and death. If all five people can refrain from exploiting the destructive power of the capsules, Earths’ people will be spared by the aliens, who are looking for a new planet to colonize.

Scripted by John Mantley from his novel, and directed without frills by William Asher, “The 27th Day” is marked by an intelligent and interesting premise. It won’t be to every taste because instead of dazzling us with action scenes or special effects, it instead focuses on examining the human tendencies towards xenophobia, paranoia, self destruction, and conflict. Naturally, people in power do end up discovering the amazing “gifts” bestowed upon the five strangers, and learn of their potential. Events escalate towards a tense showdown with the Russians, who see the annihilation of the Western world within their reach.

Jonathan and Eve, all too aware of what reactions will be once the world at large learns their identities, attempt to hide out (and predictably, fall in love, although this subplot remains appreciably minor). The most important breakthroughs are made by Professor Bechner, who means to study the capsules in greater detail.

The performances are solid from the well chosen cast. Likable leads Barry and French are extremely well supported by actors such as Stefan Schnabel as the warmongering Russian general, Friedrich von Ledebur as the sincere Dr. Neuhaus, and Paul Birch as an American admiral. Paul Frees and Mel Welles appear unbilled; the greatest contribution is by Mr. Voskovec, one of those actors who makes exposition worth listening to.