Alicia Huberman (Bergman) is the daughter of a WWII Axis sympathizer who teams with government agent Devlin (Grant) to thwart the plans of an inner circle of post-war Nazis.

But complications arise when Alicia and Devlin fall in love.

Will their new connection hamper the now utterly dangerous mission?

Wonderful Rio locations serve as backdrop for the exceptional performances by both Grant & Bergman. But equal kudos goes to Rains for his terrific supporting work here.

There's a thrilling mood throughout, capped by a dark and memorable ending.

Check out that still-stunning long, long, long tracking shot down the stairs to the Unica key in Bergman's clutched hand.

Perfect from beginning to end.