But on Quintana's own statement there were nearly forty thousand pounds in ready cash in the safe, and they were forty thousand reasons for some deep and sober cogitation before he retired from the scene into which he had so seasonably introduced himself. After all, there was still the outstanding matter of a tenner which the late Mr Ingleston had owed; and in the light of what Simon had learned he could see even less reason than before why it should not be repaid with interest… And there was also the telephone conversation to which Senor Pongo had hastened away, which might be worth listening to.

The voices went on coming through the door while he stood for a while undecided.

"Even you take risks," Quintana was saying. "If I had known that you would drive here—"

"That was no risk. There are no policemen looking for me, and taxi drivers are not detectives."

This might be the best chance he would have to do something about the safe, while the odds in the study were reduced from three to two. But Pongo might return at any moment — and by the same token his telephone conversation wouldn't last forever. Whereas the safe and its contents would probably manage to keep a jump ahead of disintegration for a few minutes more.

Simon made his choice with a shrug. He tiptoed back across the room towards the door that opened onto the landing. He had no idea what was on the other side of it, but that was only an incidental gamble among many others.

Even so, he was still destined to be surprised.

The carpet outside must have been very thick or the door very solid, for he heard nothing until he was a couple of yards from it. And then the door was flung open and Pongo rushed in.

The light from the landing caught the Saint squarely and centrally as it streamed in; but Pongo was entering so hastily that he was well inside the room before he could check himself.

Simon leapt at him. His left hand caught the man by the lapels of # his coat, and at the same time he sidestepped towards the door, pushing it shut with his own shoulder and turning the key with his right hand. But the shock had slowed up his reaction by a fatal fraction, and the other recovered himself enough to let out a sharp choking yelp before the Saint shifted his grip to his throat.