“She has at least an answer for everything. Did you ask her whether in leaving she met any one or saw any one loitering about Charles Street?”

“She saw no one but the constable.”

“Well, you seem to have cross-examined her pretty thoroughly. What else have you done?”

“The clerk Gorot has been shadowed all these nine weeks, but without result. We can show nothing against him.”

“Anything else?”

“Well, we have nothing else to go upon—no evidence of any kind.”

“Have you formed a theory about how that bell rang?”

“Well, I must confess that it beats me. It was a cool hand, whoever it was, to go and give the alarm like that.”

“Yes, it was a queer thing to do. Many thanks to you for what you have told me. If I can put the man into your hands you shall hear from me. Come along, Watson.”

“Where are we going to now?” I asked, as we left the office.