A pale light is seen around the room, and then unseen voices materialize.

Each time an unseen voice sounds, we have an incident.

She sat quietly against the wall and looked toward the unseen voice.

But on their second day there, the unseen voice spoke again.

He was working his way toward the sound of the unseen voice.

A great deal depended on the answer of that unseen voice in the window.

"Place the papers in the entry port and step back," the unseen voice continued.

"Stop what you are doing," came an unseen voice from the new ship.

"Still setting them up," the unseen voice came back.

"I have to keep reminding myself this is just a dream," the unseen voice said agitatedly.