Frank promised. âMaybe heâll give us some leads.â
âI sure hope so, fellows,â their friend replied as they climbed onto the motorcycles.
The same thought was running through Frankâs and Joeâs minds: maybe this mystery would turn out to be their first case!
CHAPTER III
The Threat
âYOUâRE getting to be pretty good on that motorcycle, Frank,â Joe said as the boys rode into the Hardy garage. âIâm not even scared to ride alongside you any more!â
âYouâre not scared!â Frank pretended to take Joe seriously. âWhat about meâriding with a daredevil like you?â
âWell,â Joe countered, âletâs just admit that weâre both pretty good!â
âIt sure was swell of Dad to let us have them,â Joe continued.
âYes,â Frank agreed. âAnd if weâre going to be detectives, weâll get a lot of use out of them.â
The boys started toward the house, passing the old-fashioned barn on the property. Its first floor had been converted into a gymnasium which was used after school and on week ends by Frank and Joe and their friends.
The Hardy home, on the corner of High and Elm streets, was an old stone house set in a large, tree-shaded lawn. Right now, crocuses and miniature narcissi were sticking their heads through the light-green grass.
âHello, Mother!â said Frank, as he pushed open the kitchen door.
Mrs. Hardy, a petite, pretty woman, looked up from the table on which she was stuffing a large roasting chicken and smiled.
Her sons kissed her affectionately and Joe asked, âDad upstairs?â
âYes, dear. Heâs in his study.â
The study was Fenton Hardyâs workshop. Adjoining it was a fine library which contained not only books but files of disguises, records of criminal cases, and translations of thousands of codes.
Walking into the study, Frank and Joe greeted their father. âWeâre reporting errand accomplished,â Frank announced.
âFine!â Mr. Hardy replied. Then he gave his sons a searching glance. âIâd say your trip netted you more than just my errand.â
Frank and Joe had learned early in their boyhood that it was impossible to keep any secrets from their astute father. They assumed that this ability was one reason why he had been such a successful detective on the New York City police force before setting up a private practice in Bayport.
âWe ran into some real excitement,â Frank said, and told his father the whole story of Chetâs missing jalopy, the wrecked car which they suspected had been a stolen one also, and the attempted holdup at the ferryboat office.
âChetâs counting on us to find his car,â Joe added.
Frank grinned. âThat is, unless the police find it first.â
Mr. Hardy was silent for several seconds. Then he said, âDo you want a little advice? You know I never give it unless Iâm asked for it.â He chuckled.
âWeâll need a lot of help,â Joe answered.
Mr. Hardy said that to him the most interesting angle to the case was the fact that the suspect apparently used one or more wigs as a disguise. âHe may have bought at least one of them in Bayport. I suggest that you boys make the rounds of all shops selling wigs and see what you can find out.â
The boys glanced at the clock on their fatherâs large desk, then Frank said, âWeâll have time to do a little sleuthing before closing time. Letâs go!â
The two boys made a dash for the door, then both stopped short. They did not have the slightest idea where they were going! Sheepishly Joe asked, âDad, do you know which stores sell wigs?â
With a twinkle in his eyes, Mr. Hardy arose from the desk, walked into the library, and opened a file drawer labeled âW through Z.â A moment later he pulled out a thick folder marked WIGS: Manufacturers,