"I can't say," admitted the informant. "Neither do I care to state how I came into possession of these documents. But, as you will find when you look into the matter, they are entirely authoritative and do not refer to an isolated case. The Murbar is the rule, not the exception. It's now up to you people to find out how the fraud was worked."

"He's right, at that," was the comment from the acting Secretary, when the former sugar official had departed. "The information is undoubtedly the result of a personal desire to 'get even'—for our friend recently lost his place with the company in question. However, that hasn't the slightest bearing upon the truth of his charges. Carr, it's up to you to find out what there is in 'em!"

"That's a man-sized order, Mr. Secretary," smiled Dick, "especially as the work I did some time ago on the sampling frauds made me about as popular as the plague with the sugar people. If I ever poked my nose on the docks at night you'd be out the price of a big bunch of white roses the next day!"

"Which means that you don't care to handle the case?"

"Not so that you could notice it!" snapped Carr. "I merely wanted you to realize the handicaps under which I'll be working, so that there won't be any demand for instant developments. This case is worth a million dollars if it's worth a cent. And, because it is so big, it will take a whole lot longer to round up the details than if we were working on a matter that concerned only a single individual. If you remember, it took Joe Gregory nearly six months to land Phyllis Dodge, and therefore—"

"Therefore it ought to take about sixty years to get to the bottom of this case, eh?"

"Hardly that long. But I would like an assurance that I can dig into this in my own way and that there won't be any 'Hurry up!' message sent from this end every week or two."

"That's fair enough," agreed the Assistant Secretary. "You know the ins and outs of the sugar game better than any man in the service. So hop to it and take your time. We'll content ourselves with sitting back and awaiting developments."

Armed with this assurance, Carr went back to New York and began carefully and methodically to lay his plans for the biggest game ever hunted by a government detective—a ring protected by millions of dollars in capital and haunted by the fear that its operations might some day be discovered.

In spite of the fact that it was necessary to work entirely in the dark, Dick succeeded in securing the manifests and bills of lading of three other sugar ships which had recently been unloaded, together with copies of the receipts of their cargoes. Every one of these indicated the same mysterious shrinkage en route, amounting to about six per cent of the entire shipment, and, as Carr figured it, there were but two explanations which could cover the matter.