Shorthouse smelt an increase of salary in the air. It had a stimulating effect.
"I've had some experience of that article, sir," he said shortly; "but I'm ready to undertake anything in reason."
"I can't say how much reason or unreason there may prove to be in this particular case. It all depends."
Mr. Sidebotham got up and locked the door of his study and drew down the blinds of both windows. Then he took a bunch of keys from his pocket and opened a black tin box. He ferreted about among blue and white papers for a few seconds, enveloping himself as he did so in a cloud of blue tobacco smoke.
"I feel like a detective already," Shorthouse laughed.
"Speak low, please," returned the other, glancing round the room. "We must observe the utmost secrecy. Perhaps you would be kind enough to close the registers," he went on in a still lower voice. "Open registers have betrayed conversations before now."
Shorthouse began to enter into the spirit of the thing. He tiptoed across the floor and shut the two iron gratings in the wall that in American
