Sometimes a bit of breathless claustrophobia is just the thing to combat a scorching-hot summer (you know, fight panic with panic), and what could be better for that than a submarine thriller?

"Black Sea" may have a little daylight, but it's not light fare — not a single ray of joy peeps through. Directed by Kevin Macdonald ("The Last King of Scotland," "Touching the Void"), it's a film submerged in depression, suspicion and corrosive fear.

Jude Law stars as Robinson, a submarine captain who spent 30 years as a salvage expert only to be axed when a younger company executive (Scoot McNairy) informs him that "things have changed." Robinson is not the only one in this predicament. All around him, men who have worked decades underwater are fired with nowhere to go. "Black Sea" lingers on their simmering rage and discontent, and we're reminded how, all over the world, workers are getting shafted because "things have changed."