"I have not tried yet. I had to develop the photograph first."
"Of course. When do you expect the red-haired young man to return?"
"He promised to come back yesterday, but he failed to do so," replied Doctor Thurston. Then suddenly:
"But who said anything about his being young or red-haired?"
"Not you certainly, old man," replied Sturgis, smiling. "Don't worry; you have not voluntarily betrayed any professional secret. But, for all that, your patient is wanted by the police. He was bound to fall into their hands before long. The only effect of this discovery will be to hasten the dénouement. I had traced him to your house, and I knew how he was wounded; so that I recognized him as soon as you mentioned his case."
"Who is he?" asked Thurston. "I am sure I have seen him somewhere before; but I cannot remember where."
Whereupon the reporter related the story of Chatham's connection with the Knickerbocker bank case.
CHAPTER XVII.
THE QUARRY.