CHAPTER VII

A Mysterious Conversation When the Hardy boys and the girls got back to the picnic grounds, the boys excused themselves and drew away to one side, while the girls went down to join the swimmers. “I think we ought to go back there,” said Frank quietly. “Why? Did you recognize any of them?” “Did you?” “I thought one of them looked mighty like Ollie Jacobs,” said Joe. “He’s a pretty shady customer, as you know. I’ve heard of more than one bad business he has been mixed up in around Bayport.” “Ollie Jacobs, was it? The…