When the man received orders to drive to Worthington Road, Penge, he was sarcastic, and seemed disinclined to take the fare.

“It’s a long way, gov’nor,” said the driver, when Dudley had announced his intention of paying well.

“I can’t go there and back under a couple o’ quid.”

“Very well, that’s agreed,” Chisholm said. He stepped into the cab, threw himself into a corner, and gave himself up to a long and serious train of thought.

He loved Claudia, and hated the mysterious woman, who had in a manner so remarkable learned the truth regarding the one tragic event in his past. Muriel’s innocent-looking face utterly belied her crafty and avaricious nature. Gifted with the countenance of a child, her active brain was that of an adventuress. A dangerous woman for any man to associate with. And he, Dudley Chisholm, who had so long prided himself upon his shrewd observance of men and women and his quick perception, had been utterly and completely deceived.

The long drive across Westminster Bridge and along the wide and apparently endless thoroughfares with their rows of gas-lamps, through the suburbs of Walworth, Camberwell, Denmark Hill, and Sydenham, passed unnoticed. He was so much preoccupied that he did not realise his whereabouts until they were descending the hill past Sydenham Station, where they turned to the right by Venney Road, thus heading for Penge. The suburban roads were quiet and deserted; the horse’s hoofs and the tinkling of the bell were the sole disturbers of the night.

Presently the cabman pulled up to ask the solitary policeman the direction of the road which Dudley had mentioned; then he drove on again. At last, after making several turns, they passed down Green Lane and entered a road of small detached villas, rather artistically built, with red and white exteriors. Apparently they were only just finished, for in front of some there still were piles of bricks and building rubbish, while before others boards stood announcing that this or that “desirable residence” was “to be let or sold.”

The road was a cul-de-sac which terminated in a newly worked brickfield. When nearly at the end of it, the cab suddenly pulled up before a house of exactly the same appearance as its unlet neighbour, save for the fact that the Venetian blinds were down, and that a gas-jet was burning behind the fan-light of the door.

“This is it, sir,” announced the cabman through the trap-door in the roof. Dudley left the cab and passed through the newly painted iron gate and up the short path to the door, at which he knocked with a firm and sounding rat-tat.

There were signs of scuttling within. His quick eye noticed that one of the slats of the Venetian blind in the bay window of the parlour had been lifted for an instant by some person who had evidently been watching for him, and then dropped again quickly.