“Rollo, Maine,” De Medici answered. Dr. Lytton examined the torn envelope.

“Rollo, Maine,” he repeated; “mailed yesterday morning. Come now, pull yourself together, Julien.”

“Yes.”

“The thing is complete. It fits in. Hm, what a curious handwriting. You recognize it?”

“Hers,” he answered.

“Almost,” the scientist murmured. “Come, the mystery draws to an end. I would like to make comparisons. Have you a letter of hers?”

“Yes.”

Mechanically, De Medici opened the table drawer. Dr. Lytton brought a candle close to its contents.

“Here!” he exclaimed. His eyes studied the envelope. “Written two months ago. Fine. Excellent.”

He removed a letter sheet and spread it under the light. De Medici watched him. His calm had returned.