"I was much interested in the story you were telling me about that Zala banker," Watson began. "You say that Stover claimed that Babcock owed him and that he took the bank stock to settle the debt?"
"Yes."
Watson took a box of cigarettes from his pocket and offered the box to Harold.
"No, thank you, I do not use them."
"This is one of my bad habits," Watson explained, as he took a cigarette from the box and lighted it. "I usually smoke a package a day, and some days, when anything worries me, I use two packages. You spoke of the cashier's leaving the night of the same day that Babcock was injured. What is your opinion? Do you think that this cashier robbed Babcock or was an accomplice in robbing him?"
"No, I don't think that; but I think that this cashier can give some valuable information."
"Well, you are right. I am that cashier."
"I knew that. I came here on purpose to see you."
"You did! How did you locate me?"
"I located you by means of the eye of the Invisible Empire."