"Ah," he laughed. "I remember them, instantly. Droite 72, Gauche 23, Droite 7. Droite. Is it not extraordinary? I cannot do without you, Mademoiselle Tanya--nor you without me. I shall prove it to you. You shall see----"
As she did not reply he relapsed into silence, bending in sudden concentration upon his task. And in a moment, the click of a falling tumbler within the lock announced success. The knob moved no more. Then he took hold of the heavy handle and turned toward the girl with a laugh.
"OPEN, SESAME!" he said. "The Princess Tatyana wishes to enter."
The light wavered as the girl drew back and Rowland saw amazement in her eyes.
"Princess!" she was whispering. "Who told you of my title?"
He stared at her blankly and then her meaning came to him.
"Why, no one, Mademoiselle. The Princess Tatyana is a fairy-friend of my childhood. I dreamed of her as now I dream of you."
She stood puzzled a moment and then switched the light upon the door.
"Open, Monsieur Rowlan'," she said in a half whisper.
He grasped the massive handle in both hands and with an effort, swung the heavy mass of steel outward and the dark entrance to the vault lay open to them.