"I don't know what you're talking about," he said in a quiet, toneless voice.

When after a minute she spoke again, her words came in a flat, toneless voice.

Again he heard the still, toneless voice: "We plan to keep you with us permanently.

Eventually he said in a flat, toneless voice, "I have to get to see her."

"We can go now, if you like," she said in a toneless voice.

He heard his own voice, oddly toneless, from a distance.

In the toneless voice of the translator, it was impossible to tell.

His voice, so toneless, still conveyed an edge of bitterness to her.

The question was asked in an absolutely toneless voice.

I think I've killed him,' she said in a toneless voice.