Tim and I watched him as his expression shifted from skepticism to delight.

She stared between the two men, watching as Mac's expression suddenly shifted.

She was looking at him almost beseechlngly now, her expression shifting from one mood to another.

As he listened, Mike's expression shifted from confusion to concern, then finally to anger.

Staring at the cat, his expression shifted to startled recognition, then to cold fear.

His expression shifted warily when he realized what it was.

His expression shifted, reflecting hers; she hated that he had noticed.

Margaret's expression shifted as quickly as I had hoped it would.

Now Crusher's expression shifted from concern to curiosity and she smiled.

His expression shifted, changed to a look that could only be described as triumphant.