He was away some time, going on tiptoe in the offices. When he returned it was with an unopened bottle of whiskey, a syphon and a glass. "I'm afraid I have no corkscrew," he apologised.

"I 'ave," said the imperturbable Collop, who had sat royally in his chair to receive this tribute. He pulled out the cork, smelt the brand, approved of it, poured himself out a dope and a most miserable little splash from the syphon.

"Here's luck!" he said. "Cheerio! Now you leave me to it!"

And de Bohun left him to it, ardently praying with what was left of his childhood's faith to a God in whom he still vaguely believed, that never again in the remaining years of his declining life should he be compelled to harbour under the roof of Paulings any unit from the mighty Secret Service which he commanded, and inwardly deciding that he would relinquish that command for India, Paris, South Africa—nay, New Zealand—anything rather than bear such a burden again.

[CHAPTER THIRTEEN]

It is a fascinating occupation to watch a powerful human brain at work upon some great problems—the face alive with mind, the tension of the muscles, the frowning eyes; and to feel behind it all that driving, compelling power of the intelligence wherein man is God-like.

But no one would have seen this sight in the case of Mr. Collop had he remained. What he would have seen was a hand pouring out whiskey for itself over and over again and adding smaller and smaller splashes of soda; and at last an obese body attempting sleep in the lounge chair which it filled.

He had comfortably made up his mind. He was going to stay in the West Room and sleep as he could, leaving his bed untouched by way of giving the impression of a long night's intellectual wrestling. Next morning he would take every one of the three in turn, tell each separately that he was from the Yard, tax them brutally with the theft, and terrify and bully the culprit, whichever of the three it might turn out to be, into confession. So decided, he chose a good chair among the mutilated victims, wheeled it close to the electric switches by the fire, settled himself down, turned off the light and shut his eyes for sleep.

Now it is paradoxically true of the substantial more than it is of the insufficient, that they must shift and turn to find that posture in which their persons can best repose, especially in chairs. Nor could Mr. Collop at once and easily fall into the arms of Morpheus. He shifted and turned, and wedged in and re-wedged in and out, and moved again and replaced those various muscles and anatomical names of which escape me—or rather I never knew them, though the things themselves I know well enough—when all of a sudden he gave a loud and piercing cry and leapt up broad awake. Something had stuck into him—something abominably sharp. His reaction had been instantaneous. He struck a match. He switched on the light.