In a few weeks time Dave scored a big success and won several trophies. His final exploit was taking the place of an aviator who had fainted away in his monoplane, and winning the race for Mr. King's machine. Dave was now the proud possessor of a pilot's license, and had fairly entered the professional field. The thief who had stolen Mr. King's property from Dave, a graceless youth named Gregg, was found, and the property recovered. He had also got hold of some papers that belonged to Dave's father. Gregg through these had obtained a trace of a Mr. Dale, a great friend of the dead balloonist. He had made Mr. Dale believe he was the real Dave Dashaway, until he was unmasked. Another bad boy Dave had run across was named Jerry Dawson. From the start in his career as an airman this youth had been an enemy. Dave had succeeded him in the employ of Mr. King, Jerry having been discharged in disgrace. Jerry tried to "get even," as he called it, by trying to wreck Mr. King's monoplane, the Aegis. He also betrayed Dave's whereabouts to his guardian. Because Dave was right and Jerry wrong, there plots rebounded on the schemer and did Dave no harm. Jerry and his father were exposed. They still followed the various meets, however, just as Mr. King and Dave and Hiram did, but they were shunned by all reputable airmen. After leaving the aero meet at Dayton the proud possessor of a trophy as winner of a one hundred mile dash, Dave now found himself and his friends on the aero, grounds at Columbus. This was a summer resort located on Lake Michigan. A two weeks' programme had been arranged, in which Dave was to give exhibitions for his employers of their new model hydroplane. Hiram was practicing for a flight in the Baby Racer. The two friends that rainy summer evening were interested in plans for the coming meet and aviation business generally. The arrival of the telegram once more introduces the reader to Dave Dashaway, now popularly known as the young aviator. The telegram which Grimshaw had brought to Dave was dated at the headquarters of the Interstate Aeroplane Co., some three hundred miles distant. It was addressed to Dave in care of Mr. King, and it was signed by the manager of the company. It read as follows: "Our sales agent, Timmins, reported from your quarters at Columbus three days ago. Was due at Kewaukee this morning on big contract with County Fair Amusement Co. Wired Northern Hotel there, where we had forwarded all the contracts and papers, and he is not there. Find him at any expense, and get him to Kewaukee before to-morrow morning, or the Star Aero Co. will get the order. Fear some trick. This means ten thousand dollars to us." Dave read and reread this message, weighing every word in his mind as he did so. Hiram sat watching him in a fever of suspense and anxiety. Finally he exclaimed: "See here, Dave Dashaway, is that Greek you can't make out, or have you gone to sleep?"