Arthur Conan Doyle,
Memoirs of Sherlock Holmes — Adventure XVIII: The Reigate Puzzle
(1894)
“ Holmes had disappeared. "Wait here an instant," said young Alec Cunningham. "The fellow is off his head, in my opinion. Come with me, father, and see where he has got to!" They rushed out of the room, leaving the Inspector, the Colonel, and me staring at each other. "'Pon my word, I am inclined to agree with Master Alec," said the official. "It may be the effect of this illness, but it seems to me that——" His words were cut short by a sudden scream of "Help! Help! Murder!" With a thrill I recognized the voice of that of my friend. I rushed madly from the room on to the landing. ”
