“What the devil do you mean?”

“We will come to our explanations, Percival, when the light is out of that window, and when I have had one little look at the rooms on each side of the library, and a peep at the staircase as well.”

They slowly moved away, and the rest of the conversation between them (which had been conducted throughout in the same low tones) ceased to be audible.  It was no matter.  I had heard enough to determine me on justifying the Count’s opinion of my sharpness and my courage.  Before the red sparks were out of sight in the darkness I had made up my mind that there should be a listener when those two men sat down to their talk—­and that the listener, in spite of all the Count’s precautions to the contrary, should be myself.  I wanted but one motive to sanction the act to my own conscience, and to give me courage enough for performing it—­and that motive I had.  Laura’s honour, Laura’s happiness—­Laura’s life itself—­might depend on my quick ears and my faithful memory to-night.

I had heard the Count say that he meant to examine the rooms on each side of the library, and the staircase as well, before he entered on any explanation with Sir Percival.  This expression of his intentions was necessarily sufficient to inform me that the library was the room in which he proposed that the conversation should take place.  The one moment of time which was long enough to bring me to that conclusion was also the moment which showed me a means of baffling his precautions—­or, in other words, of hearing what he and Sir Percival said to each other, without the risk of descending at all into the lower regions of the house.

In speaking of the rooms on the ground floor I have mentioned incidentally the verandah outside them, on which they all opened by means of French windows, extending from the cornice to the floor.  The top of this verandah was flat, the rain-water being carried off from it by pipes into tanks which helped to supply the house.  On the narrow leaden roof, which ran along past the bedrooms, and which was rather less, I should think, than three feet below the sills of the window, a row of flower-pots was ranged, with wide intervals between each pot—­the whole being protected from falling in high winds by an ornamental iron railing along the edge of the roof.

The plan which had now occurred to me was to get out at my sitting-room window on to this roof, to creep along noiselessly till I reached that part of it which was immediately over the library window, and to crouch down between the flower-pots, with my ear against the outer railing.  If Sir Percival and the Count sat and smoked to-night, as I had seen them sitting and smoking many nights before, with their chairs close at the open window, and their feet stretched on the zinc garden seats which were placed under the verandah, every word they said to each other above a whisper (and no long conversation, as we all know by experience, can be carried on in a whisper) must inevitably reach my ears.  If, on the other hand, they chose to-night to sit far back inside the room, then the chances were that I should hear little or nothing—­and in that case, I must run the far more serious risk of trying to outwit them downstairs.