Maybe he didn't want anyone to hear the questions in his voice.

At the end he heard a few words in a woman's voice.

Whatever he heard in my voice stopped him for a moment.

But she could hear more in his voice than he meant to say.

At night, or when his father was away, he heard it in her voice.

He'd never said those words to another, and she heard the truth in his voice.

She was sure he must have heard it in her voice.

I could hear it in your voice every time you said his name.

She could hear a smile in his voice, as well.

She could hear something cold and dangerous in his voice.