There's just something irresistibly fun about a "jack-in-the-box" movie like Black Bag. You know, the sort of movie where you're not sure which crank of the handle is going to spur that explosive popping of the top. The slower, more deliberate the turns, the more teeth are gritted in anticipation.
It doesn't take long for Black Bag to establish itself as a pantheon-level offering in Steven Soderbergh's portfolio of showpieces, a sleek and taut return to form for a director…