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 that he had located the bookshop, but didn't know what to do next. And the date he mentioned in the ad, midnight on Tuesday, December third, was to inform Weintraub (of whose identity he was still ignorant) when Metzger was to go on board the ship. Weintraub had been instructed by their spy organization to watch the LOST and FOUND ads."

"Think of it!" cried Titania.

"Well," continued Aubrey, "all this may not be 100 per cent. accurate, but after putting things together this is how it dopes out. Weintraub, who was as canny as they make them, saw he'd have to get into direct touch with Metzger. He sent him word, on the Friday, to come over to see him and bring the book. Metzger, meanwhile, had had a bad fright when I spoke to him in the hotel elevator. He returned the book to the shop that night, as Mrs. Mifflin remembers. Then, when I stopped in at the drug store on my way home, he must have been with Weintraub. I found the Cromwell cover in the drug-store bookcase—why Weintraub was careless enough to leave it there I can't guess—and they spotted me right away as having some kind of hunch. So they followed me over the Bridge and tried to get rid of me. It was because I got that cover on Friday night that Weintraub broke into the