The one behind the kidnapping of Catarina Claes turns out to be someone that nobody expected. Catarina is shocked to learn the true reason why he kidnapped her, but he's so moved by her cheerful demeanor that he begins to tell her more and more about himself. As he does, Catarina proposes an idea...
I believe it would be in your best 
interest to read it immediately.
.أعتقد أنّ من صالحك أن تقرأها في الحال
Ich denke, es wäre in Ihrem besten Interesse,
den eingetroffenen Brief umgehend zu lesen.
Creo que le interesaría
leerla inmediatamente.
Creo que le interesaría
leerla inmediatamente.
Je vous conseille de la lire rapidement.
Pour votre bien.
Credo che sia nel vostro interesse
 leggerla immediatamente.
Acredito que seja de seu interesse
verificar logo o conteúdo.
Мне кажется, что вам же будет лучше
прочитать его как можно скорее.