The Shadow had come as an unseen visitor.

One could not have said that a man had walked by the scattered watchers; for the unseen visitor was virtually invisible.

The unseen visitor - if real, as Johnny now believed - could have no purpose other than to steal, or spy.

The wall was composed of rough bricks, and the unseen visitor used them as easily as if they had been a ladder.

Stooping, the unseen visitor plucked the newspaper from the basket.

Continuing that path was a simple matter for the unseen visitor in black.

The meeting of selectmen had gained an unseen visitor.

No notice being taken of the taps, the unseen visitor, after a short lapse, ventured to open the door and peep in.

Scarcely had the unseen visitors glanced about the interior when the visibeam was cut off sharply.

The Shadow knew now that Duncan's unseen visitor was a murderer!