While there was a certain resemblance between the two lads, chiefly in the firm yet good-humored expression of their mouths, in some respects they differed greatly in appearance. While Frank was dark, with straight, black hair and brown eyes, his brother was pink-cheeked, with fair, curly hair and blue eyes. These were the Hardy boys, sons of Fenton Hardy, an internationally famous detective who had made a name for himself in the years he had spent on the New York police force and who was now, at the age of forty, handling his own practice. The Hardy family lived in Bayport, a city of about fifty thousand inhabitants, located on Barmet Bay, three miles in from the Atlantic, and here the Hardy boys attended high school and dreamed of the days when they, too, should be detectives like their father. As they sped along the narrow shore road, with the waves breaking on the rocks far below, they discussed their chances of winning over their parents to agreement with their ambition to follow in the footsteps of their father. Like most boys, they speculated frequently on the occupation they should follow when they grew up, and it had always seemed to them that nothing offered so many possibilities of adventure and excitement as the career of a detective. "But whenever we mention it to dad he just laughs at us," said Joe Hardy. "Tells us to wait until we're through school and then we can think about being detectives." "Well, at least he's more encouraging than mother," remarked Frank. "She comes out plump and plain and says she wants one of us to be a doctor and the other a lawyer." "What a fine lawyer either of us would make!" sniffed Joe. "Or a doctor, either! We were both cut out to be detectives and dad knows it." "As I was saying, the help we gave him in that forgery case proves it. He didn't say much, but I'll bet he's been thinking a lot." "Of course we didn't actually _do_ very much in that case," Joe pointed out. "But we suggested something that led to a clue, didn't we? That's as much a part of detective work as anything else. Dad himself admitted he would never have thought of examining the city tax receipts for that forged signature. It was just a lucky idea on our part, but it proved to him that we can use our heads for something more than to hang our hats on." "Oh, I guess he's convinced all right. Once we get out of school he'll probably give his permission. Why, this is a good sign right now, isn't it? He asked us to deliver these papers for him in Willowville. He's letting us help him." "I'd rather get in on a real, good mystery," said Frank. "It's all right to help dad, but if there's no more excitement in it than delivering papers I'd rather start in studying to be a lawyer and be done with it." "Never mind, Frank," comforted his brother. "We may get a mystery all of our own to solve some day."