That secret was known only to those within the mansion; and from those it could not be hidden.

The charm which drew so many visitors to the saloons of Madame Durski was the fatal spell of the gaming-table. The beautiful Paulina opened a suite of three spacious chambers for the reception of her guests. In the outer apartment there was a piano; and it was here Paulina sat—with her constant companion, Matilda Brewer. In the second apartment were small green velvet-covered tables, devoted to whist and écarté. The third, and inner, apartment was much larger than either of the others, and in this room there was a table for rouge et noir.

The door of this inner apartment was papered so as to appear when closed like a portion of the wall. A heavy picture was securely fastened upon this papered surface, and the door was lined with iron. Once closed, this door was not easily to be discovered by the eye of a stranger; and, even when discovered, it was not easily to be opened.

It was secured with a spring lock, which fastened of itself as the door swung to.

This inner apartment had no windows. It was never used in the day-time. It was a secret chamber, hidden in the very centre of the house; and only an architect or a detective officer would have been likely to have discovered its existence. The walls were hung with red cloth, and Madame Durski always spoke of this apartment as the Red Drawing-room. Her servants were forbidden to mention the chamber in their conversation with the neighbours, and the members of the Austrian widow's household were too well trained to disobey any such orders.

By the laws of England, the existence of a table for rouge et noir is forbidden. All these precautions were therefore necessary to insure safety for the guests of Madame Durski.

Paulina, herself, never played. Sometimes she sat with Miss Brewer in the outer chamber, silent and abstracted, while her visitors amused themselves in the two other rooms; sometimes she seated herself at the piano, and played soft, plaintive German sonatas, or Leider ohne Worte, for an hour at a time; sometimes she moved slowly to and fro amongst the gamblers—now lingering for a few moments behind the chair of one, now glancing at the cards of another.

One of her most constant visitors was Reginald Eversleigh. Every night he drove down to Hilton House in a hack cab. He was generally the first to arrive and the last to depart.

It was also to be observed that almost all the men who assembled in the drawing-rooms of Hilton House were friends and acquaintances of Sir Reginald.

It was he who introduced them to the lovely widow. It was he who tempted them to come night after night, when prudence should have induced them to stay away.