Narkom acted upon the invitation so promptly that he was up the stairs and in the cozy, curtained, and lamp-lit room which Cleek called his den almost as quickly as his host himself. In fact, Cleek had scarcely time to sweep into the drawer of his writing table a little pile of something which looked like a collection of odds and ends of jewellery, bits of faded ribbon, and time-stained letters, and turn the key upon them, before the police official was at the door.

"Hullo!" said Cleek in a tone of surprise and deep interest as the superintendent came fairly lurching into the room. "What's in the wind, Mr. Narkom? You look fairly bowled. Whisky and soda there—at your elbow—help yourself. I presume it is a case—nothing else would bring you here at this time and in such a state. What kind is it? And for whom? Some friend of yours or for the Yard?"

"For both, I'm afraid," replied Narkom, pouring out a stiff peg of whisky and nervously gulping it down between words. "God knows I hope it may be only for the Yard, but considering what I know——Get your hat and coat. Come with me at once, Cleek. It's a murder—a mystery after your own heart. Lennard's below with the limousine. Come quickly, do, there's a dear chap. I'll tell you all about it on the way. The thing's only just been done—within the hour—out Wimbledon way."

"I might have guessed that, Mr. Narkom, considering that you were to mingle duty with pleasure and spend the evening at Wimbledon with your old friend, Sir Philip Clavering," replied Cleek, rising at once. "Certainly I will go with you. Did you ever know the time when I wouldn't do all that I could to help the best friend I ever had—yourself? And if it is, as you hint, likely to be in the interest of the friend of my friend——"

"I'm not so sure of that, Cleek. God knows I hope it's a mistaken idea of mine; but when you have heard, when you have seen, how abominably things point to that dear boy of Clavering's and to the girl that dead fellow was conspiring with her father to take away from him——"

"Oho!" interjected Cleek, with a strong rising inflection. "So there is that element in the case, eh?—love and a woman in distress! Give me a minute to throw a few things together and I am with you, my friend."

"Thanks, old chap, I knew I could rely upon you! But don't stop to bother about a disguise, Cleek, it's too dark for anybody to see that it isn't 'the Captain' that's going out; and besides, there's everything of that sort in the limousine, you know. The street is as dark as a pocket, and there's nobody likely to be on the watch at this hour."

The curious one-sided smile so characteristic of the man looped up the corner of Cleek's mouth; his features seemed to writhe, a strange, indefinable change to come over them as he put into operation his peculiar birth gift; and an instant later, but that he had not stirred one step and his clothing was still the same, one might have thought that a totally different man was in the room.

"Will it matter who watches?" he said, with just a suspicion of vanity over the achievement. "It will be—let us see—yes, a French gentleman whom we shall call 'Monsieur Georges de Lesparre' to-night, Mr. Narkom. A French gentleman with a penchant for investigating criminal affairs, and who comes to you with the strong recommendation of the Parisian police department. Now cut down to the limousine and wait for me, I'll join you presently. And, Mr. Narkom?"

"Yes, old chap?"