French stared. “Me, sir?” he exclaimed as if unable to believe his ears. “Do you wish me to take it up?” The other smiled satirically. “I don’t know any one who could do it better.” “And drop my present case?” “Only temporarily,” the Chief assured him. “A day or so will make little difference to your own affair, and I have no one else to send on this one. Look into it and try and find out if any one dropped those rings off the bridge, and if so, who he was and why he did it. When you have done that you can go ahead with the Starvel affair.” French was completely puzzled. This was very unlike the line the Chief usually took. “Of course, sir, it’s what you say; but do you not think it is very urgent that this bank-note business be followed up while the trail is warm? Every day that passes will make it more difficult to get the truth.” “That applies even more strongly to this other affair. But it has the advantage of probably being a shorter inquiry. With luck you can finish it off to-morrow, and if so, that will delay the larger case only very slightly.” French saw that whatever might be the Chief’s motive, he had made up his mind. “Very good, sir,” he returned. “I’ll go down to Whitechapel at once and get started.” “Right, I wish you would.” French was conscious of not a little exasperation as he walked to Charing Cross and there took an eastward bound train. A few hours might make all the difference between success and failure in the Starvel case, and here he was turned on to this other business during the very period when it was most important he should be on his own job. He could not understand what was at the back of the Chief Inspector’s mind. Apparently he suspected a crime, though what crime he had in view French could not imagine. Marshall could have dealt with ordinary petty theft. But if Mr. Mitchell suspected a serious crime and if, as he said, no other officer was available to investigate the affair, his attitude would be explained. But whether it were explained or not orders were orders, and French with an effort switched his mind off John Roper and on to lightermen and wedding rings. On arrival at Divisional Headquarters he saw Inspector Marshall and heard his account of the affair, which was almost word for word that of the Chief Inspector’s. “I don’t know what the Chief’s got in his mind,” French grumbled. “Here was I on that Starvel case and on a hot scent too, and why he should switch me off on to this affair I can’t see. He’s got some bee in his bonnet about it. He believes these fellows’ yarn and he wants me to find the man who threw the rings over.” Marshall made noises indicative of surprise and sympathy. “I shouldn’t have thought the Chief Inspector would have stood for that dope,” he remarked. “What are you going to do about it?”