“Not a day. He has been laid up with a hack, and once he slipped his kneecap, but that was nothing.”

“Perhaps he was not so strong as you suppose. I should think he may have had some secret trouble. With your assent, I will put one or two of these papers in my pocket, in case they should bear upon our future inquiry.”

“One moment⁠—one moment!” cried a querulous voice, and we looked up to find a queer little old man, jerking and twitching in the doorway. He was dressed in rusty black, with a very broad-brimmed top-hat and a loose white necktie⁠—the whole effect being that of a very rustic parson or of an undertaker’s mute. Yet, in spite of his shabby and even absurd appearance, his voice had a sharp crackle, and his manner a quick intensity which commanded attention.

“Who are you, sir, and by what right do you touch this gentleman’s papers?” he asked.

“I am a private detective, and I am endeavouring to explain his disappearance.”