"I can, whatever it may be," she answered.
"I have seen that face at River Hall."
She threw up her arms with a gesture of despair.
"And," I went on, "I may be wrong, but I think I am destined to solve the mystery of its appearance."
She covered her eyes, and there was silence between us for a minute, when I said:
"Can you give me the name of the person who told you I was at River Hall?"
"I cannot," she repeated. "I promised not to mention it."
"He said I was in danger."
"Yes, living there all alone."
"And he wished you to warn me."