Cyril's amiable features hardened as he glanced at his brother.

His features hardened as he turned to face his first officer.

Then be turned away, and his features hardened with thought.

He saw her features harden, as if bones lent strength to flesh.

His features hardened, and he felt the hot flow of blood in his arteries.

Then his features hardened, and he took a step toward the door.

Eain looked at his brother, and saw his features harden.

His features hardened, and he forced himself to say, "Bring all weapons capabilities to bear.

His features hardened slightly then, and he turned away.

Pookie's features hardened, and she broke eye contact to stare straight ahead.