Why you've been allowed to come into the house and talk with me, I can't think, unless he is watching and listening through a hidden spyhole.
"It Happened in Egypt"
C. N. Williamson A. M. Williamson
He locked both doors leading into the waiting office, and took up his position at the spyhole that gave him command of his own office.
"The Imaginary Marriage"
Henry St. John Cooper
Then one day you came to the office where I was employed, and the man who employed me put his private room at your disposal, knowing that by means of some spyhole he had contrived he could hear all that passed between us.
"The Imaginary Marriage"
Henry St. John Cooper