No one believes him until he produces video evidence of the mysterious being.

It seems we're about to get our first glimpse of one of these mysterious beings!

They are mysterious beings with advanced technology that could be called magic.

Had this mysterious being, whatever he was, whose existence could not be denied, abandoned the island?

But the mysterious being had yet to respond to him.

Even my conversation with the father and mother did not quite clear up the character of this mysterious being.

The hand that held a flashlight moved as a mysterious being of the dark stalked through the cottage.

How had the mysterious being of the night entered this place?

Caught in a tight spot, Cliff had been pulled from trouble by the mysterious being of the night.

Whoever that mysterious being might be, he was certainly from out of town.