"I'll trust you," said Nick, with a smile.
"Sure you are not afraid I may fall down?"
"Not in the least, Slack. Good-by."
Nick limped out of the building, and half an hour later was in his room on Jefferson Avenue. Chick, to his satisfaction, was there to meet him. His face shone with excitement and pleasure. "Great news, Nick," he said. "I've located Leonard."
"Where is he?" Nick's face was now as bright as Chick's.
"In a big brick building used as a private sanatorium, beyond the southern limits of the city."
"Doctor Holcomb runs this sanatorium, doesn't he?"
"Yes," regarding the great detective in astonishment. "How did you know?"
"I obtained a list of Leonard's friends to-day, and among them, as the closest and most intimate of all, is the name of Doctor Holcomb. He was a mining partner of Leonard in California many years ago. I have been anxious to see you, Chick, so that I might put you on, but you have already done the trick. You are a wonder, Chick."