A startled gleam came into Mr. Chesleigh's eyes, his face whitened, a cry of horror came from his lips.
"Doctor, are you quite, quite sure?" he exclaimed.
"I would swear to the drug," was the instant reply. "Do you admit the wine?"
"Yes," came the grave reply; "I drank a glass of wine before coming in here yesterday evening, but I did not dream it was drugged," and an expression of almost incredulous horror swept over the handsome face.
"Who gave you the wine?" inquired the doctor and Richard Leith almost simultaneously.
But Bertram Chesleigh shook his head.
"Do not ask me," he said. "It is terrible, yet I will not betray my would-be destroyer."
"It was one of the Glenalvans," asserted Richard Leith, seeing the truth as by a flash of light.
"Do not ask me," the young man replied again. "I must not tell you. It is too terrible. I can scarce believe the dread reality myself."