This Apple TV+ offering could be the best film exclusive to a streaming service.
Which is surprising, as the prospect of spending time with Tom Hanks on a grey destroyer in the frigid grey mid-Atlantic, under a cold grey sky, is not an immediate draw.
This is another of Hanks' ordinary-men-being-extraordinary roles, and it can be easily forgotten just how good he is at them.
And while his character is stoic, the action isn't. Greyhound is a tight, taut, 90-minute thrill ride.
Hanks plays Captain Krause, a man who gets his first captaincy in World War II, helming a ship protecting a convoy of merchant ships open to attack from Nazi submarines.
Director Aaron Schneider eschews exposition.
It is the little things we pick up from Krause - his instinct in finding his prey, his morality in sending men to their deaths and then chiding his young crew for celebrating such a win.
Greyhound is not as arty as 1917 or Dunkirk, but even with green-screen backgrounds, it brings home the stark reality of the sacrifice made by ordinary people to help others survive.
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