three-some streaked across the streetâbut it was too late. The stocky man was lost to sight. The Hardys raced down the next two blocks, peering in every direction, but to no avail.
Disappointed, Frank and Joe went back to Chet, who had stopped to catch his breath.
âWe lost him,â Joe reported tersely.
Frankâs eyes narrowed. âI have a hunch that man who passed the bogus twenty-dollar bill to Chet knew it was counterfeit. That last-second dash for the train was just a gimmick to make a fast getaway. But his showing up here in Bayport a couple hours after he took the train out of town is mighty peculiar.â
Joe and Chet agreed. âHe probably got off in Bridgeport,â Frank went on. âThatâs the nearest big town.â
As the boys walked back toward the Scientific Specialties Store, they speculated about the source of the supply of bogus money.
âMaybe itâs Bridgeport,â Frank said. âThat could be one of the reasons he took the train thereâto get a new supply, or palm off more.â
âYou mean they might actually make the stuff there?â Chet asked.
Frank shrugged. âCould be,â he said. âI hope no more counterfeit bills are passed in Bayport.â
âThere probably will be,â Chet said ruefully, âif this town is full of easy marks like me.â
âLetâs keep a sharp lookout for that fake-money passer from now on,â Joe said, âand other clues to the counterfeit ring.â
âWho knows,â Chet put in, âit could turn out to be your next case.â
As soon as Mr. Reed had been paid, the boys drove to Bayport Police Headquarters. Chet decided to take his microscope into headquarters and show it to Chief Ezra Collig. The keen-eyed, robust officer was an old friend of Fenton Hardy and his sons. Many times the four had cooperated on cases.
âSit down,â the chief said cordially. âI can see that you boys have something special on your minds. Another mystery?â
He leaned forward expectantly in his chair.
âItâs possible, Chief,â replied Frank as he handed over the counterfeit bill. Quickly the Hardys explained what had happened, then voiced their suspicions of the man who had just eluded them.
âHave there been any other reports of people receiving fake bills?â Joe asked the officer.
Chief Collig nodded. âChetâs not the first to be fooled,â he replied. âSince the Secret Service alerted us to watch for these twenty-dollar bills, weâve had nearly a dozen complaints. But weâve instructed the people involved not to talk about it.â
âWhy?â Chet asked curiously.
âItâs part of our strategy. We hope to trap at least some of the gang by lulling them into a feeling of false security.â
The boys learned that Chetâs description of the stocky stranger tallied with what the police had on file.
âHeâs a slippery one,â the chief added. âIt sounds to me as if the man wears a different outfit each time he shoves a bill.â
âShoves?â echoed Chet.
âA shoverâor passerâis a professional term for people who pass counterfeit money,â Chief Collig explained. He rubbed the bogus bill between his fingers. âThis is a clever forgery,â he said. âLetâs see what it looks like under your microscope, Chet.â
It took just a minute to rig and focus the microscope. Then, under Chief Colligâs directions, the boys scrutinized the faults in the bill.
âLook at the serial number,â the chief pointed out. âThatâs the large, colored group of numbers that appears on the upper right and lower left portions of the bill.â
As the boys peered at the number, Chief Collig made some quick calculations on his desk pad. âDivide the serial number by six,â he went on, âand in this case, the remainder is two.â
When