Mr. Washington obeyed, and with a small pair of scissors Manfred cut a slit in the lining and slipped the letter in. Then, to the American’s astonishment, Leon produced a rolled housewife, threaded a needle with extraordinary dexterity, and for the next five minutes the snake-hunter watched the deft fingers stitching through paper and lining. So skilfully was the slit sewed that Elijah Washington had to look twice to make sure where the lining had been cut.

“Well, that beats the band!” he said. “Mr. Gonsalez, I’ll send you my shirts for repair!”

“And here is something for you to carry.” It was a black leather portfolio, well worn. To one end was attached a steel chain terminating in a leather belt. “I want you to put this round your waist, and from now on to carry this wallet. It contains nothing more important than a few envelopes imposingly sealed, and if you lose it no great harm will come.”

“You think they’ll go for the wallet?”

Manfred nodded.

“One cannot tell, of course, what Oberzohn will do, and he’s as wily as one of his snakes. But my experience has been,” he said, “that the cleverer the criminal, the bigger the fool and the more outrageous his mistakes. You will want money.”

“Well, I’m not short of that,” said the other with a smile. “Snakes are a mighty profitable proposition. Still, I’m a business man . . .”

For the next five minutes they discussed financial details, and he was more than surprised to discover the recklessness with which money was disbursed.

He went out, with a glance from the corner of his eye at the taximan, whose hand was raised inquiringly, but, ignoring the driver, he turned and walked towards Regent Street, and presently found a wandering taxi of an innocuous character, and ordered the man to drive to the Ritz-Carlton, where rooms had been taken for him.

He was in Regent Street before he looked round through the peep-hole, and, as Manfred had promised him, the taxi was following, its flag down to prevent chance hiring. Mr. Washington went up to his room, opened the window and looked out: the taxi had joined a near-by rank. The driver had left his box.