“Ten bob over the fare if you’ll take me quickly to where you set down those two men you got off the Cornish express,” he said in a low eager voice.

This man also looked at him curiously and answered, “Right y’are, guv’nor,” then having paused to say something to the driver of the leading car on the rank, they turned out into Praed Street.

The man drove rapidly along Edgware Road, through Maida Vale and on into a part of the town unfamiliar to Cheyne. As they rattled through the endless streets Cheyne instructed him not to stop at the exact place, but slightly short of it, as he wished to complete the journey on foot. It seemed a very long distance, but still the man kept steadily on. The town was now taking on a suburban appearance and here and there vacant building lots were to be seen.

Presently they passed an ornate building which Cheyne recongized as the tube station at Hendon, and shortly afterwards the vehicle stopped. Cheyne got out and looked about him, while the driver explained the lie of the land.

They had turned at right angles off the main thoroughfare leading from town into a road which bore the imposing title of “Hopefield Avenue.” This penetrated into what seemed to be an estate recently handed over to the jerry-builder, for all around were small detached and semi-detached houses in various stages of construction. Many were complete and occupied, but in scores of other cases the vacant lots still remained, untouched save for their “To let for building” signboards.

Leaving the taxi in a deserted crossroad, the driver signified to Cheyne that they should go forward on foot. A hundred yards farther on they reached another cross-road—the place was laid out in squares like an American city—and there the driver pointed to a house in the opposite angle, intimating that this was their goal.

It was a small detached villa surrounded by a privet hedge and a few small trees and shrubs, evidently not long planted. The two adjoining lots, both along Hopefield Avenue and down the crossroad—Alwyn Road, Cheyne saw its name was—were vacant. Facing it on both streets were finished and occupied houses, but in the angle diagonally opposite was a new building whose walls were only half up.

Thrilled with eager anticipation and excitement, Cheyne dismissed the driver with his ten-shilling tip and then turned to examine his surroundings more carefully, and to devise a plan of campaign for his attack on the enemy’s stronghold.

He began by crossing Alwyn Road and walking along Hopefield Avenue past the house, while he examined it as well as he could by the light of the street lamps. It was a two-story building of rather pleasing design, apparently quite new, and conforming to the type of small suburban villas springing up by thousands all around London. As far as he could make out it had the usual rectangular plan, a red-tiled roof with deep overhanging eaves and a large porch with above it a balcony, roofed over but open in front. A narrow walk edged with flower beds led across the forty or fifty feet of lawn between the road and the hall door. On the green gate Cheyne could just make out the words “Laurel Lodge” in white letters. So far as he could see the house appeared to be deserted, the windows and fanlight being in darkness. After the two vacant lots was a half-finished house.

Returning presently, he passed the house again, this time rounding its corner and walking down Alwyn Road. Between the first vacant lot and Laurel Lodge ran a narrow lane, evidently intended to be the approach to the back premises of the future houses.