By Franklin W. Dixon
Infrequently do magicians display their expert secrets and techniques. as a result Frank and Joe Hardy are surprised while a well known magician, the exceptional Hexton, bargains to bare the key of his “Vanishing guy Act” and invited Mr. Hardy to be the topic. while their detective father fails to reappear, his sons are confident that anything sinister is afoot, regardless of Hexton’s insistence that Mr. Hardy is enjoying a comic story on them. whereas desperately trying to find their father, Frank and Joe locate themselves operating with SKOOL, a U.S. association of mystery brokers pitted opposed to UGLI, a world ring of spies stealing executive secrets and techniques locally and across the world. The younger detective’s gripping adventures culminate in a dramatic climax after they unmask the key agent on Flight a hundred and one.