The V-1 blast and Sarah's vow
In June 1944 a V-1 flying bomb hits the house where Bendrix and Sarah are making love. Bendrix is knocked unconscious under a door, and Sarah, believing he is dead, kneels and promises a God she does not believe in that she will give him up if he lives. When he walks in alive she keeps the vow and ends the affair without explanation, and Bendrix spends two years believing she left him for another man. He learns the real reason only by hiring a private detective, who steals her diary.