Das Boot Season 4 is to Premiere on Sky Go

Hoffmann struggles to hang on as his chance to escape heads toward US shores. Margot pushes on with her plans. 

Wrangel catches up with Johannes, leading to a dramatic showdown out in the Atlantic. Hoffmann shows up at Cassandra's place.

Johannes and Wrangel try to bring their crews into line. Despite his growing love for Cassandra, Hoffmann seeks an escape route. 

Keen to impress his superiors, Forster cracks down on Anatole's wayward behaviour. Wrangel finally has his arch rival in sight.

An attempt to get his crew on side has serious consequences for Johannes. Margot finds a vital ally as Forster reaches St. Remy.

Tensions build beneath the ocean as Wrangel continues his pursuit of U-822. In New York, Sam takes drastic measures.

When Johannes' plan emerges, Gluck knows only one man is capable of stopping him. Margot needs help to get the Goldblatts out.

War is taking its toll on U-boat commander Johannes von Reinhartz, hero of the Kriegsmarine. Could a new mission offer a way out?

With news of Gluck's kidnapping reaching La Rochelle, Forster is on the warpath and everyone is in the firing line, including Simone.

Details of what happened to the U-612 reach the shore and Forster has the task of breaking the news to Simone.

Trapped below the angry, ominous rumble of a destroyer, the outlook is bleak for the crew of U-612. The inexperienced but eager young men wanted a battle, but they may have taken on more than they bargained for.

The crew welcomes the departure of Greenwood, but their new guest comes as a surprise. Meanwhile, Carla and Simone's relationship continues to develop.

Following the explosion at La Rochelle, the Mayor is ordered to make some harsh decisions under the watchful eye of Gluck and Forster.

As U-612 completes the first part of their mission, the crew is reeling from a tragic death. Meanwhile on land, Gluck organises a parade for the return of Captain Becker and his men.

Aboard U-612, the men are adjusting to their new lives. Meanwhile in La Rochelle, Simone struggles to piece together what happened the previous evening.

U-boat Captain Ulrich Wrangel and his men are caught in battle with a US Frigate. Meanwhile, in occupied France, young Captain Klaus Hoffmann worries that he won't be able to live up to his famous father's reputation.