“Vernet’s foot has pressed the yielding carpet; he clutches the air wildly, and disappears.”—[page 137].

For the first time Alan Warburton, the self-possessed, polished man of society, is at a loss for words. Society has given him no training, taught him no lessons applicable to such emergencies as this.

“Of one thing you must be warned,” continues the guide. “Van Vernet is a sleuth-hound on a criminal secret, and he considers you a criminal. He has seen you standing above that dead man with a bar of iron in your hand—did you know that bar of iron was smeared with blood, and that wisps of human hair clung to its surface? Never mind; I do not accuse you. I do not ask you to explain your presence there. You have escaped from Van Vernet, and he will never forgive you for it. He will hunt you down, if possible. You know the man?”

“I never saw his face until to-night.”

“What! and yet, two hours ago, he was at your brother’s house, a guest!”

“True. My dear sir, I am deeply indebted to you, but just now my gratitude is swallowed up in amazement. In Heaven’s name, who are you, that you know so much?”

“‘Silly Charlie’ is what they call me in these alleys, and I pass for an idiot.”

“But you are anything but what you ‘pass for.’ You have puzzled me, and outwitted Van Vernet. Tell me who you are. Tell me how I can reward your services.”