"It's very important," went on the nervous and insistent voice. "It's a—a very important case. Critical."

"Who are you?"

"Is that necessary?" queried the voice, after a pause.

"Certainly. Do you suppose that I am going out on any wild-goose, anonymous call?"

"Then I was to say," said the voice, "that Mona needs you."

"Mona! Is she ill?"

"Yes."

"Where?"

"Here, in Trenton."

"Where in Trenton?"