Zizi looked at Dorcas in surprise.

“You’re a trump!” she exclaimed; “good for you! Come along, we’ll see what we can do.”

The two girls went to the Binney rooms and began their search. But it seemed useless to look through papers in the desk or books on the book shelves after Wise and the other detectives had gone over that ground.

“Was Sir Herbert sly and canny?” asked Zizi, thoughtfully.

“Oh, yes, indeed. He was never caught napping. If he hid that paper, he hid it in a good place. It won’t be found easily. We must think of some inconspicuous place,—in the back of a picture, or tacked up above the inside of a drawer.”

“Clever girl!” and Zizi’s admiration increased. “Here goes, then.”

They both looked in all such places as Dorcas had suggested, but with no success at all.

Wise came in while they were thus busy, and smiled approval at the work in progress.

“Hello,” he said, suddenly, as Dorcas peered behind a picture that was hung low, “the wall paper isn’t faded at all in this room. Must be new.”

“It is,” Dorcas told him. “Sir Herbert had this room repapered when he took the apartment.”