Ida took up the envelope of the last letter, and, inspecting the postmark, replied:
“Yes, since a woman is involved, as these letters show, and she is in this city now. This letter was mailed this afternoon by three o’clock.”
Nick turned with a start.
“By three o’clock?” he asked. “Are you sure?”
Ida handed him the envelope, saying:
“Look for yourself. And it was from the General Post Office.”
“Then,” said Nick, “the writer of this letter knew of the disappearance as quickly as we did.”
“It’s my guess,” said Patsy, “before.”
“You mean,” said Nick, “that she was a part of it?”
“Perhaps,” said Patsy; “anyhow, she knew it was goin’ to take place.”