She shook it, holding it by her ear. "There's something inside—it rattles ever so slightly. I wonder!"

"No more than I."

"And what are you going to do with it?" She returned it reluctantly.

"Why, there's nothing to do but keep it till the owner turns up, that I can see."

"You won't break it open?"

"Not until curiosity overpowers me and I've exhausted every artifice, trying to find the catch."

"Are you a patient person, Mr. Amber?"

"Not extraordinarily so, Miss Farrell."

"Oh, how did you guess?"

"By remembering not to be stupid. You are Miss Sophia Farrell, daughter of Colonel Farrell of the British Diplomatic Service in India." He chuckled cheerfully over this triumph of deductive reasoning. "You are visiting the Quains for a few days, while en route for India with some friends whose name I've forgotten—"