She gave the missive to Larry. He looked at the post-mark, and saw that it had come from a downtown sub-station.
"This was mailed near the steamer pier!" he exclaimed. "Close to where Retto was hurt. He must have posted it just previous to the accident. I wish I had known this before."
It was too late now, and Larry gazed regretfully at the envelope. Clearly, Retto had not been far from Mr. Potter at the time of the accident. Perhaps the missing millionaire was hiding downtown in New York.
"I must make some inquiries in that neighborhood," thought Larry, as he arose to go.
"Another thing," Grace said. "That man Sullivan was in front of the house again this morning."
"I must see him!" exclaimed Larry. "I'll make him tell what his object is. This thing has got to end!"
He was fiercely determined that he would
force some information from the politician. Evidently Sullivan had a game on hand which the reporter had not yet succeeded in fathoming. "I'll hunt him up at once!" he added, as he bade Grace good-bye.
"Be careful," she cautioned. "He is a dangerous man."
"I will," Larry promised.