Myra shook her head with affected seriousness. "You must not let Mr. Saunderson hear you," she said. "His orchids are his children. Their very mystery enthrals him--and really it is most fascinating. To look at one of those shapeless bulbs, and to speculate upon what kind of bloom it will produce, is almost as thrilling as reading a sensational novel! He has one growing now--it will bloom some time this week--about which he is frantically excited." "Where did he get it?" asked Cairn without interest. "He bought it from a man who had almost certainly stolen it! There were six bulbs in the parcel; only two have lived and one of these is much more advanced than the other; it is _so_ high--" She held out her hand, indicating a height of some three feet from the ground. "It has not flowered yet?" "No. But the buds--huge, smooth, egg-shaped things--seem on the point of bursting at any moment. We call it the 'Mystery,' and it is my special care. Mr. Saunderson has shown me how to attend to its simple needs, and if it proves to be a new species--which is almost certain--he is going to exhibit it, and name it after me! Shall you be proud of having an orchid named after--" "After my wife?" Cairn concluded, seizing her hands. "I could never be more proud of you than I am already...." CHAPTER XXIII THE FACE IN THE ORCHID-HOUSE Dr. Cairn walked to the window, with its old-fashioned leaded panes. A lamp stood by the bedside, and he had tilted the shade so that it shone upon the pale face of the patient--Myra Duquesne. Two days had wrought a dreadful change in her. She lay with closed eyes, and sunken face upon which ominous shadows played. Her respiration was imperceptible. The reputation of Dr. Bruce Cairn was a well deserved one, but this case puzzled him. He knew that Myra Duquesne was dying before his eyes; he could still see the agonised face of his son, Robert, who at that moment was waiting, filled with intolerable suspense, downstairs in Mr. Saunderson's study; but, withal, he was helpless. He looked out from the rose-entwined casement across the shrubbery, to where the moonlight glittered among the trees. Those were the orchid-houses; and with his back to the bed, Dr. Cairn stood for long, thoughtfully watching the distant gleams of reflected light. Craig Fenton and Sir Elwin Groves, with whom he had been consulting, were but just gone. The nature of Myra Duquesne's illness had utterly puzzled them, and they had left, mystified. Downstairs, Robert Cairn was pacing the study, wondering if his reason would survive this final blow which threatened. He knew, and his father knew, that a sinister something underlay this strange illness--an illness which had commenced on the day that Antony Ferrara had last visited the house.