A sound at the church's back caused them to look up.

Another sound from behind them caused him to turn his head.

A small sound caused him to turn his head 'What's that?' he said into the darkness.

The sound of the door opening caused us to turn.

The very sound of her voice caused his heart to pause.

They took care, as if a sound could cause Swallow to slip away.

Before he could shape the words, a small sound caused him to turn his head.

Even the sound of his voice could cause her heart to race.

Presently a sound behind caused him to turn his head.

Such a loud sound causes the mind to come into the present moment.