He tapped it, and it gave forth the same sound as its neighbours. Then he lowered the torch and ran its beams along the front of the step; high up, under the overhanging edge of the tread above it, it seemed as if there were a flaw or crack in the stone. He knocked upon it, and it gave back a different sound to the stone around it.
Clearly it was wood, not stone, though so cleverly painted to imitate its surroundings that it was a thousand to one against anyone ever noticing it; and yes, there was a little circular depression in the middle of it. Gimblet's thumb pressed heavily against the place, and immediately there was a click, and a long narrow drawer flew out.
In it lay a single sheet of paper, and Gimblet's fingers shook with excitement as he drew it forth.
A moment's pause while he perused the writing upon it, and then the exultation on his face dwindled away. He could perceive no meaning in these apparently random sentences.
"Remember that where there's a way there's a will. Face curiosity and take the bull by the horn."
Was this the cipher, of which he had never received the key? The papers he had hoped to find must be hidden elsewhere. No doubt in some place whose whereabouts was indicated, if he could only understand it, by the incomprehensible message he held.
He stared at it for some minutes in an endeavour to find the translation; then, reflecting that this was neither the time nor place for deciphering cryptograms, he placed it carefully in an inner pocket, and after a hasty exploration of the passage beyond which did not reveal anything interesting except from an archaeological point of view, he thoughtfully mounted to the room above.
Closing the trap-door, and making sure that everything in the library was left as he had found it, Gimblet made his exit from the castle in the same manner as he had entered it, and groped his silent way home through the darkness.
A convenient creeper made it easy to climb on to the porch of Lady Ruth's house, now wrapped in peaceful slumber; and so in at his own window once more. The noise of the wind, which had now freshened to the strength of half a gale, drowned any sound of his return, and he lost no time in getting to bed and to sleep. The puzzle must keep till to-morrow. It was one of Gimblet's rules to take proper rest when it was at all possible, for he knew that his work suffered if he came to it physically exhausted.