“I believe the main line departure side of Victoria, though I’m not just certain.”

“Good!” said French heartily. “Now, could you describe the lady?”

This, however, was beyond the driver’s powers. He had not noticed her specially, nor could he describe the porter who had taken the luggage. But French had not expected that, indeed, he was surprised and delighted at having got so much.

The rest of that day and most of the next he spent at Victoria, interviewing porters, inspectors, ticket collectors, and any other officials he could find, who might by chance have seen the quarry. But nowhere had he any luck. The unknown remained unknown.

As he continued turning the matter over in his mind, a further possible clue in connection with the trunks occurred to him. They were large; they could not be taken in the carriage. It was nearly certain, therefore, that they must have been registered through. Were there records, he wondered, of such registration?

He went to the registration office and saw the clerk in charge. Yes, there were records; they were kept for a while and then destroyed. He could with a little trouble turn up those for the Newhaven boat train on the 26th November, and he would certainly do so to oblige the Inspector.

But the records, when at last they were produced, revealed neither the name of Mrs. Root nor the fact that any one had registered two large trunks by that train.

French discussed the possibility of those in question having been taken unregistered. It seemed that this was possible, but most unlikely. In any case, had it been done, the clerk believed the Customs people would have noted it. But it would take some time to find out.

“Don’t trouble about it,” French told him; “at least, not in the meantime.”

Suppose this woman crook was impersonating Mrs. Root, as he believed she was, would she not, as soon as she had disposed of the diamonds, seek to vanish and to resume her real personality? If so, did this not involve getting rid of the trunks? Did she really require them, or had they served their purpose when they reached Victoria?