Michael Fassbender and Cate Blanchett question whether one another might be the mole in a riveting genre exercise that respects our intelligence.

So goes much of the crackling patter of “Black Bag,” Steven Soderbergh’s delicious marital drama cloaked as a sleek spy thriller. Lean and taut, the 93-minute “Black Bag” is more a sizzling amuse-bouche than full-course meal, but it’s simmered to perfection.

The movie arrives only two months after Soderbergh's last movie Presence, a unique spin on a haunted house movie. He's not that fast of a filmmaker, it's just a quirk of release scheduling, but if Black Bag is the result, then even two months is too long to wait.