Nothing in his expression told her what he was thinking.

He saw the face of their mother in her expression.

Nothing in his expression said he had ever met her before.

Usually, more than one of these words is used in an expression.

For the first time, there was hope in his expression.

He saw something in my expression I hadn't known was there.

But there was something in her expression he had never seen before.

A change in her expression must have brought that question from him.

This time she could read it in the expression on his face.

They said that every action of life showed on the face, in the expression.