where Nita had ordered a perfectly gorgeous lunch, with a heavenly centerpiece of green-striped yellow orchids—Well, I don't suppose you're interested in what we ate and things like that—" she hesitated. "Was there anything unusual in the conversation—anything like a quarrel?" Dundee prompted. "Oh, no!" Penny protested. "Nothing happened out of the ordinary at all—No, wait! Nita received a letter by messenger—or rather a note, when we were about half through luncheon—" There was a low, strangled-in-the-throat cry from someone. Who had uttered it Dundee could not be sure, since his eyes had been on his notebook. But what had really interrupted Penny Crain was a crash. CHAPTER FOUR "Pardon! Awfully sorry," Clive Hammond muttered, as he bent to pick up the fragments of a colored pottery ashtray which he and his fiancée, Polly Beale, had been sharing. "Don't worry—about picking it up," Polly commanded in her brusque voice, but Dundee, listening acutely, was sure of a very slight pause between the two parts of her sentence. He glanced at the couple—the tall, masculine-looking girl, lounging deep in an armchair, Clive Hammond, rather unusually good-looking with his dark-red hair, brown eyes, and a face and body as compactly and symmetrically designed as one of the buildings which had been pointed out to Dundee as the product of the young architect's genius, now resuming his seat upon the arm of the chair. His chief concern seemed to be for another ashtray, which Sergeant Turner, with a grin, produced from one of the many little tables with which the room was provided.... Rather strange that those two should be engaged, Dundee mused.... "Go on, Miss Crain," the detective urged, as if he were impatient of the delay. "About that note or letter—" "It was in a blue-grey envelope, with printing or engraving in the upper left-hand corner," Penny went on, half closing her eyes to recapture the scene in its entirety. "Like business firms use," she amended. "I couldn't help seeing, since I sat so near Nita. She seemed startled—or, well maybe I'd better say surprised and a little sore, but she tore it open and read it at a glance almost, which is why I say it must have been only a note. But while she was reading it she frowned, then smiled, as if something had amused or—or—" "She smiled