The story related in the expanded edition of Twilight is a direct continuation of The Year of the Sword, the third novel of the Strasbourg Saga. The story of The Year of the Sword came to a close in 1649 during the Cossack wars in Poland and Ukraine, and the original edition of Twilight picked up the story in 1658. The expanded edition follows the exploits of the popular characters of the Saga from the end of 1649 through 1658.