Once upon a time, Steven Soderbergh was on tap to direct what would eventually become Guy Ritchie’s The Man from U.N.C.L.E., with George Clooney starring. While that project eventually shifted into a new (but still stellar) direction,

Marisa Abela, Tom Burke, Naomie Harris, Regé-Jean Page and Pierce Brosnan flesh out the ensemble in this twisty tale of loyalty and deception among British intelligence agents.

Continuing to prove that retirement is not just overrated, but a real impediment to an artist’s best work, in “Black Bag,” Steven Soderbergh dashes off a sleek little genre exercise — a doodle really,