Dick Powell gives a smooth performance in this hour-long episode that reeks of "Mr. & Mrs. Smith" shtick, as he vies with British double agent Hazel Court in a Cold War spy story concerning which country will gain possession of a key scientist (involved in launching "Sputnik" no less) defecting from the Soviet Union.
There are elements of violence and life & death action here, but basically Robert Ellis Miller (who made "The Heart Is a Lonely Hunter") emphasizes a light, romantic tone throughout. Lovely Hazel Court is a terrific femme fatale while Cecil Kellaway keeps one guessing in a flashy supporting role.
TV from 60 years ago is of course quite dated in many ways, yet it was interesting how an early conversation here between Powell & Court reflects unintentionally on issues still quite relevant. Powell's cover is that he works for a major computer outfit, and in repartee Hazel asks him if machines can tell what his wife prefers in clothing and he indicates no. In recent years just such an ability drives most of the advertising and marketing today, even before the increasing use of AI.