Then the inebriated individual, now hopelessly muddled by drink, staggered towards the door and lurched wildly round the corner, just in time to see mademoiselle cross the Boulevard and daintily make her way between the rows of stalls.

The air seemed, however, to have a surprising effect on the old reprobate, for the simple reason that to simulate drunkenness and at the same time keep pace with the lady's rapid strides was out of the question.

La Belle Chasseuse was evidently in a hurry. She sped along at a surprising pace, until she reached a crossing where the rows of stalls and booths were temporarily suspended. At one corner stood a cab, and towards this vehicle she directed her steps. Before Brett quite realized what was happening, the door of the cab opened, mademoiselle jumped inside, and, as if he were waiting for her appearance, the driver whipped up his horse and drove off at a furious pace.

At that instant a small victoria with a sturdy pony in the shafts, which had just deposited a lively fare in the vicinity of the Moulin Rouge, drove along the street.

Brett sprang into it and said eagerly to the driver—

"Keep that cab in sight! I will pay you double fare!"

The man tightened his reins and raised his whip in prompt obedience to the order, when suddenly two men jumped into the vehicle from opposite sides, seized Brett and forced him down on to the seat, whilst one of them said in stern tones to the astonished cabby—

"Take us at once to the Central Prefecture of Police."

The man recognized that these newcomers were not to be trifled with. Without a word or a question, he rattled his horse across the stone pavement, and Brett, choking with rage at this interference at a supreme moment, realized that for some extraordinary reason he was a prisoner, and in the hands of a couple of detectives.