Holmes rose and sat down at the table with his pen in his hand and a bundle of paper before him. “Just tell us the truth,” he said. “I shall jot down the facts. You will sign it, and Watson here can witness it. Then I could produce your confession at the last extremity to save young McCarthy. I promise you that I shall not use it unless it is absolutely needed.”

“It’s as well,” said the old man; “it’s a question whether I shall live to the Assizes, so it matters little to me, but I should wish to spare Alice the shock. And now I will make the thing clear to you; it has been a long time in the acting, but will not take me long to tell.

“You didn’t know this dead man, McCarthy. He was a devil incarnate. I tell you that. God keep you out of the clutches of such a man as he. His grip has been upon me these twenty years, and he has blasted my life. I’ll tell you first how I came to be in his power.