Tiger Mann, sleuth and expert in counter-espionage, is lunching with a friend when he notices a girl enter the restaurant. To his friend, the girl is Edith Caine, a UN translator. But Tiger knows her as Rondine Lund, an Austrian who was a Nazi spy during the war. He had been in love with her - had even saved her life. In return, she had shot him and left him for dead. So it was to be a personal vendetta . . .