Graham Dean 
Agent Nine Solves His First Case 

Bob Houston and Tully Ross work as clerks in the archive division of the War Department. Their uncles, Merritt Hughes and Condon Adams are federal agents in the Department of Justice, under Waldo Edgar who is head of the department. Director Edgar calls Bob and Tully into his office, with their uncles. Foreign spies are after new secrets concerning radio that are stored in the War Department, and the Director wants inside men acting as agents of his office. He makes the young men special agents and they are to help Hughes and Adams catch the spies before secret material can be compromised.

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Graham Dean was the author of the vaunted 'Agent Nine’ mystery series, such as Agent Nine Solves His First Mystery, and Agent Nine and the Jewel Mystery.