THE ENEMY

It's a more attractive look than at firstsight looks.
It's a spy story that can be true. Desmond Bagley gives a lot of actual information about spy's world.
A man likes a woman and when he is courting her, someone throw acid to her sister's eyes thinking she was the bride. The man is a spy. Suddenly, the future father-in-law ask him to marry her daugther inmediately...