1.   Her clear face betrayed no grief or anxiety at all.

2.   His eyes were bright and his face betrayed a frustrated energy.

3.   His face betrayed him to McAllister.

4.   His face betrayed nothing.

5.   His face of course betrayed his age.

6.   Karelius hoped his face did not betray him.

7.   The sergeant glanced across at Blanche but her face betrayed no emotion at all.

8.   Their faces betrayed no sign of human warmth.

9.   He stood up, his face betraying nothing but a ruthless determination.

10.   And although Martinez and Ms. Gijon, who play the lovers, are splendid looking, they are both cool cookies whose faces betray little genuine passion.