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.

A traitor threatens to undo British Intelligence's sexiest marriage in a fun Soderbergh movie about what lies at the heart of any good relationship.

Director Steven Soderbergh is known for dividing audiences with some of his films, but this time, it looks like his new thriller, Black Bag is a bonafide hit. According to the critical score on Rotten Tomatoes, Black Bag currently has a 90 percent rating, after debuting with a ...