“You’ve got it all wrong,” he said feverishly. “I was afraid you were just kidding me — that you wouldn’t really do it at all — so I made up my mind to do it myself.”

“And not like any amateur, either,” said the Saint approvingly. “Those tools of yours are first class. I suppose you wouldn’t like to tell me how you got wind of the Angel’s Eye being re-cut here? They were certainly doing their best to keep it quiet, to try and avoid having any trouble with people like us, as I could tell by the reception I got when I started to ask questions. It was nice work of yours to locate it, but you must have thought you were really in luck when you heard I was in town, all ready to be the fall guy.”

“So help me, Mr Templar, I told you the truth—”

“Oh, no, you didn’t. Not from the word Go. I knew you were lying from the moment you said you delivered the Angel’s Eye the day before yesterday and the cutting was supposed to start yesterday. Anyone who knows anything about diamonds knows that a cutter would study an important stone like that for weeks, maybe even months, before he made the first cut, because if he made any mistake about the grain he might break it into a lot of worthless fragments. And I was doubly sure that you didn’t work for any big-time jewelers when you said that the Angel’s Eye was as big as the Hope diamond and weighed about a hundred carats. For your information, the Hope diamond, good as it is, is only forty-four and a quarter. It’s my business to know things like that, and it ought to be yours.”

Upwater swallowed.

“Can’t we call it quits?” he said desperately. “There’s plenty for both of us.”

“Thank you,” said the Saint, “but this time I’ll be happy to collect a legitimate reward, with no headaches.”

“Nobody’ll believe you,” Upwater said viciously. “I’ll say you were in it with me, right up to now.”

“I’m sorry,” said the Saint, “but I’ve taken care to prove otherwise.”

There was a sudden rush of feet, and the lights went on.