On one of the blinds of the library as he passed he saw the shadow of a head—of Osborne's head in fact, who in that hour of despair was sitting there, bowed down, hopeless now of finding Rosalind, whom he believed to be dead.

Though Mrs. Marsh had that evening received a note from Janoc: "Your daughter is alive," as yet Osborne knew nothing of it. He was mourning his loss in solitude when a letter was brought to him by Jenkins. He tore it open. After an uncomprehending glare at the written words he suddenly grasped their meaning.

The writer believes that your ex-secretary, Miss Hylda Prout, could tell you where Miss Rosalind Marsh is imprisoned.

"Imprisoned!" That was the word that pierced the gloom and struck deepest. She was alive, then—that was joy. But a prisoner—in what hole of blackness? Subject to what risks? In whose power? In ten seconds he was rushing out of the house, and was gone.

During the enforced respite of a journey in a cab he looked again at the mysterious note. It was a man's hand; small, neat writing; no signature. Who could have written it? But his brain had no room for guessing. He looked out to cry to the driver: "A sovereign for a quick run."

To his woe, Hylda Prout was not in her lodgings when he arrived there. During the last few days he had known nothing of her movements. After that flare-up of passion in the library, the relation of master and servant had, of course, come to an end between them; and the lady of the house in Holland Park where Hylda rented two rooms told him that Miss Prout had gone to see her brother for the weekend, and was not expected back till noon on the following day.

And Osborne did not know where her brother lived! His night was dismal with a horror of sleeplessness.

Long before midday he was in Hylda's sitting-room, only to pace it to and fro in an agony of impatience till two o'clock—and then she came.

"Oh, I have waited hours—weary hours!" he cried with a reproach that seemed to sweep aside the need for explanations.

"I am so sorry!—sit here with me."