Could it be, he asked himself, that the mysterious summons he experienced might have involved not Pasquinel but Clay Basket?

At the end of the work, the way Mr. Houston directed his attention outward toward some unseen force convincingly suggested that he was responding to a mysterious summons.

Reader, it was on Monday night--near midnight--that I too had received the mysterious summons: those were the very words by which I replied to it.

Then had come the scented letter, the mysterious summons to these gaudy, heady, music-filled gardens.

"To what do we owe the honor of this mysterious summons?"

Miss Hardy read an account of the captured burglars at the Wright home and the mysterious summons to the police.

His people were said to be able to perform a mysterious summons known as "the Call."

The narrative kicks off with a mysterious summons from deep within the main building of the Smithsonian Institution, with its "dark dried-blood red brick crenelated towers."

He'd had enough: the postmission debriefing, the in depth medical exam, and now this mysterious summons by Director Crowe.

Let me sweat it out for three days, then the mysterious summons and I'll open up like a steamed clam, rat on everybody.