
False Dawns: France falls in 1940 and Donitz's U-boats embark on a race to sink British merchant ships. Roberts' wargaming ideas are at last entertained by a desperate Admiralty. (S1, ep 2)

False Dawns: France falls in 1940 and Donitz's U-boats embark on a race to sink British merchant ships. Roberts' wargaming ideas are at last entertained by a desperate Admiralty. (S1, ep 2)

The Mastermind: World War II breaks out and a force of U-boats attempt to starve Britain into submission. Meanwhile, Vera Laughton Mathews recruits talented women into the Wrens. (S1, ep 1)

False Dawns: France falls in 1940 and Donitz's U-boats embark on a race to sink British merchant ships. Roberts' wargaming ideas are at last entertained by a desperate Admiralty. (S1, ep 2)

The Wrens: Though the Admiralty are convinced the Allies have the expertise to defeat Germany, Roberts and the Wrens start devising wargaming tactics to combat U-boat formations. (S1, ep 3)