Season 3 follows the fortunes of a young U-boat crew as they engage in the Battle of the Atlantic, are hunted down by an obsessed Royal Navy Commander (Ray Stevenson) and are sent on a dangerous missi

Desperatetoturnhislifearound,ahard-luckgamblerriskseverythingtosellstolencasinochipstoaruthlessgunslinger.It'stheworstbetofhislife.