His eyes narrowed as he tried to read her neutral expression.

She was watching him, a neutral expression on her face.

Instead she let her face muscles relax into a neutral expression.

He held his hand out, carefully maintaining a neutral expression.

In the first part of the study, these faces had neutral expressions.

After some time, Sloan looked up from the book, a neutral expression on his face.

He forced a neutral expression to his face and strode forward.

Then the lid was back on, his expression distant and neutral.

He turned at last and looked at her with a neutral expression.

The girl watched him go, still with the neutral expression on her face.