No Clue w/Direct link technology (A Detective Classic)

Catherine Brace walked slowly from the mantel-piece to the open window and back again. Within the last hour she had done that many times, always to halt before the mantel and gaze at the oblong, grey envelope that leaned against the clock. Evidently, she regarded it as a powerful agency. An observer would have perceived that she saw tremendous things come out of it--and that she considered them with mingled satisfaction and defiance.