'We had no idea how long you'd be out,' Nell explained, her face suddenly tensing.

I asked what sort of music she likes, and her face tensed in thought.

His face tensed in frustration, as he contemplated the man in the bed.

His face tensed with the effort; then it went slack, and moments later came the reply.

Sarveux's face tensed in the first conclusive moment of shock.

His face tensed and I was sure he was going to pull the trigger.

The President's face tensed, then opened into a slow wide smile.

But when she turned and saw him, her sweet angel's face tensed, first with surprise, then with fear.

My face tensed with anxiety as I waited to hear his answer.

For a moment, his face tensed, as if something had to be done very carefully.