Seven Days in May

As the First World War rages in continental Europe, two New York heiresses, Sydney and Brooke Sinclair, are due to set sail for England. Brooke is engaged to marry Edward Thorpe-Tracey, the future Lord Northbrook, in the wedding of the season, while Sydney is drawn to the burgeoning suffragette movement, to her sister's constant embarrassment. Sydney and Brook board the Lusitania for the seven-day voyage with Edward, not knowing that disaster lies ahead.

In London, Isabel Nelson has found employment at the British Admiralty in the mysterious Room 40. It isn't long before her skills in codes and ciphers are called upon, and she learns a devastating truth and the true cost of war. As the days of the voyage pass, these four lives collide in a struggle for survival as the Lusitania meets its deadly fate.