Gaston Leroux,
The Secret of the Night — VI. THE MYSTERIOUS HAND
(1914)
“ Nothing would have been easier than for someone who could open the door to stretch an arm and place the infernal machine among the wild flowers, above all, as could easily be believed, if he had waited for that treachery until the heavy breathing of the general told them outside that he was fast asleep, and if, looking through the key-hole, he had made sure Matrena was occupied in her own chamber. Rouletabille, at the threshold, glided to one side, out of the line of view from the hole, and got down on all fours. ”
