Edgar Wallace,
Stamped in Gold — II.—The Underground Chamber
(1919)
“ Alwin puzzled over that word until he remembered that “mug” was English slang for fool. He heard the snap of the watchcase and the grating of the chair being pushed against the wall. Then one of the men said briskly: “Well, it is time. Why doesn't Rosie come?” There was a sharp tap-tap at that moment which sounded to Frank as though it came from the ceiling. It was like the tap of a walking stick on a tesselated pavement, and he wondered what was above the vaulted roof. “Talk of the devil,” said the man called Sam. “Come on, Tom. He won't come down here. What about this fellow?” ”
