After delivering that short but pointed lecture Waldo Edgar picked up a file of papers on his desk and skimmed through them hurriedly.

“I called both of you in at this time,” he explained, “because I am assigning you on the same case.”

Bob glanced sharply at Tully and there was a deep scowl on his rival’s face. The exchange of glances was not lost to Waldo Edgar for he was aware of the rivalry between his youngest agents.

“I realize quite well that both of you are intensely interested in winning advancement in this department,” he went on. “For that very reason I know that when I assign you to a case you will leave nothing undone until you find the solution. You may step on one another’s toes in reaching your goal but you get results and that is what I want.”

The federal chief once more consulted the file on his desk.

“The mission I am going to send you on is one which has baffled some of the best men in the customs service. In other words, I am counting on you two youngsters, with your enthusiasm and determination, to get to the bottom of one of the most difficult cases that has been assigned to this department in recent years.”

Bob, looking down at the desk in front of him, saw a number of letters which bore the insignia of the customs service. Several of them were post-marked from cities in Florida. In addition, there were several letters from Paris and London.

“When I tell you that I am assigning you to this case, don’t think I’m altogether foolish, for both Merritt Hughes and Condon Adams will be working with you,” said the federal chief.

Bob knew what that meant. There would be the same rivalry which had marked the radio mystery with Condon Adams and Tully Ross attempting to solve the case before Bob and his uncle could find the solution.

“I have already had Adams and Hughes in here this morning and have explained in detail this case. They have departed on their own assignments and I shall expect both of you to be on your way to Florida early in the afternoon.