But this time, with the exception of the dubious note, there had been no such assurance. From the moment he had left the house on the morning after the kidnapping at the Kane farmhouse he had vanished as utterly as though the earth had swallowed him up. The Hardy boys questioned many people in and around Bayport, but no one recollected having seen their father on the day in question. At the railway station they ascertained the fact that the detective had not bought a train ticket that day or any day since. The agent admitted it was barely possible that Fenton Hardy might have taken a train and paid his fare on board, but said it was not likely. Inquiries at the steamboat office brought a similar response. The detective had not been seen. None of the local police officers remembered having seen Mr. Hardy that morning. The detective was a well-known figure in Bayport and it seemed strange that no one had seen him about the streets of the city, in spite of the fact that he had left home at an early hour. The boys questioned every one who was likely to have seen him, even to milkmen who might have been on their routes at that time, but the further they pursued their inquiries the deeper the mystery became. One of the boys greatly interested in the disappearance of Mr. Hardy was Perry Robinson. Perry was the son of Henry Robinson, who had once gotten into difficulties over the disappearance of some valuables, as related in “The Tower Treasure.” All of the Hardys had done much for the Robinson family, and the Robinsons were correspondingly grateful. “I saw your dad on the street one day, boys,” said Perry. “He waved his hand to me.” “When was that?” demanded Frank quickly. “Oh, a day or two before you say he disappeared. Gee, fellows, I wish I could help you!” went on Perry. “Well, keep your eyes open and if you learn anything let us know,” said Joe, and to this Perry readily agreed. Shortly after the boys had had their talk with Perry Robinson they ran into a number of their girl friends. One of these girls had likewise seen Mr. Hardy, but after considerable questioning the boys came to the conclusion that the meeting had taken place several days before their father’s disappearance. “Oh, I’m so sorry this happened,” said one of the girls, and the others nodded in sympathy. The Hardy boys extended the search beyond the city. It occurred to them that their father might have gone out to the Kane farm, and they made their way to that place. But the farmer and his wife said no one had called at the house since the eventful Sunday of the kidnapping. “They’ve left us in peace, praise be!” declared Mrs. Kane. “No one’s been near the house since those rascals went away.”