Das Boot: Season Four

All six episodes from the fourth season of the war drama set in 1943.

As U-Boats are being redirected from the Atlantic to the Mediterranean, Klaus Hoffman (Rick Okon) returns to Germany and is reunited with his sister Hannie (Rosalie Thomass).

With resistance to the Nazi regime continuing to grow, Klaus risks everything in his quest to end the war.

The episodes are: 'A German Hero', 'Target Locked', 'My Brother's Keeper', 'Battle Lines', 'Point of No Return' and 'Nothing Personal'.