“ Black Bag ,” an elegant, quick-witted new thriller that finds Cate Blanchett and Michael Fassbender playing married spies, isn’t the pair’s first time together on screen. That honor goes to 2017’s “Song to Song,” one of Terrence Malick’s most intangible and head-scratching offerings — though the two stars can barely recall that experience.

The Australian actress stars opposite Michael Fassbender in the new spy drama, directed by Steven Soderbergh and written by David Koepp.

In Steven Soderbergh's "Black Bag," Michael Fassbender plays a British double agent whose lover (Cate Blanchett) might also be a turncoat.