“Wait a moment,” interrupted Cecil. “Just remember that the three real medallions and your three electrotypes are lying side by side in the glass case. The real medallions are in the top row; your electros are the bottom row.”
Foxy made a note of this and then went on:
“Your business, Cecil, will be to mark down the keeper. Get so near him that you can jump on him for certain the very instant the lights go out. Make sure you can get his hands or his wrists at the first grab. You mustn’t fumble it or you’ll shipwreck the whole caboodle.”
“I’ll manage it all right,” Cecil assured him.
“In the meantime I’ll be stooping over the medallion case, looking at the stuff, with something in my hand to break the glass. I’ll have a thick glove, so as not to get cut with the edges when I put my hand in.”
“That’s sound,” said Cecil, “I hadn’t thought of the splinters.”
“Blood would give us away at once,” Foxy pointed out. “Now comes the real business. At a quarter to twelve precisely Una pulls out the switch. As soon as the light goes, Cecil jumps on the keeper while I smash the glass of the case and grab the top row of the medallions. After that, we both cut for the door and mingle with the mob. And remember, not a word said during the whole affair. Our voices would give us away to the keeper.”
He scribbled two extra copies of his time-table and handed one of these to each of the other conspirators.
“Now, for my sake, don’t botch this business,” he added. “I’ve played a joke or two in my time, but this is the best I’ve ever done, and I don’t want it spoiled by inattention to details. It’ll be worth all the trouble to see Maurice’s face when he finds what’s happened.”