I began to regret that in my wanderings in South America I had never penetrated into the festive region in question. All I knew about it was that, after having been for two years in the grip of that infamous filibuster, Ignace Prado, its worthy citizens had finally succeeded in blowing him and his palace sky-high, and in selecting another President more to their taste. Very likely Northcote had been mixed up with this ruffian, and if so, there was some excuse for M. Guarez and the other gentlemen who were so anxious to murder me.

The thought of being murdered suddenly brought me back to my immediate surroundings. I had left the house in such a whirl of various emotions that it had never occurred to me I was doing an exceedingly foolish thing in walking home alone at this hour of night.

Supposing I had been watched and followed! Instinctively I turned round and looked sharply back down the long curve of lighted pavement. I was just in that short but rather desolate stretch behind St. George's Hospital—an ideal spot for anyone who wanted to stick a knife into a passing stranger without arousing public interest.

My inspection, however, proved reassuring. There was no sign of any impassioned Dago creeping stealthily in my tracks; indeed, the whole thoroughfare looked about as deserted and peaceful as a London street possibly could.

Stepping out into the roadway, and keeping a watchful eye each side of me, I quickly covered the remaining hundred yards that separated me from Hyde Park Corner. Here, as usual, despite the lateness of the hour, there was a certain amount of life and movement. A stolid-looking policeman was moving slowly down the Park railing, four or five belated taxis were standing in the opposite gutter, while a cheerfully illuminated coffee-stall seemed to be doing a brisk business amongst the drivers and their touts.

With a comforting feeling of security I crossed the road, and set off up Park Lane. The full distance was only about one hundred yards, and I had covered perhaps three-quarters of this, and was just getting out my latch-key when, without the slightest warning, the thing happened.

From the dark shadow of a doorway a noiseless figure suddenly leaped out on me with the fierce swiftness of a panther. I saw the gleam of a knife, and at the same instant I lashed out with my fist—I think the quickest and most savage blow I have struck in my life.

CHAPTER XII

We must have got home together. I felt a sharp pain in my shoulder, like the touch of a redhot iron, and my assailant staggered back five yards and fetched up against the wall with a bang that echoed across the street. As he did so, there was a clatter of footsteps, and down the pavement came the figure of a man, sprinting towards us with silent but business-like rapidity.