"You know well enough."

"I am entirely in the dark. See here, is this a hold-up?"

"Yes, for we are going to hold you up, you bloody villain," said the Englishman, with a chuckle. "Don't dare to resist, or it will be the worse for you," and he drew a pistol from his pocket.

"But what does it mean?"

"It means that I have found you out. You are the murderer of Mr. and
Mrs. Langmore."

"What!"

For the instant Adam Adams was truly surprised. It was such a turn of affairs as he had not anticipated. He looked at Matlock Styles keenly. Could the Englishman really mean what he said? He certainly appeared sincere enough.

"You have made a great mistake, sir," said the detective. "I know nothing more of the murders than I have already related."

"I think differently, my fine fellow."

"What makes you imagine I am guilty?"