The housekeeper’s report of Mrs. Catherick’s desire to conceal her visit to Blackwater Park from Sir Percival’s knowledge recurred to my memory the moment he put that last question, and I half doubted the discretion of answering it; but in my anxiety to quiet the general alarm, I had thoughtlessly advanced too far to draw back, except at the risk of exciting suspicion, which might only make matters worse. There was nothing for it but to answer at once, without reference to results.

“Yes,” I said. “The housekeeper knew. She told me it was Mrs. Catherick’s dog.”

Sir Percival had hitherto remained at the inner end of the boathouse with Count Fosco, while I spoke to him from the door. But the instant Mrs. Catherick’s name passed my lips he pushed by the Count roughly, and placed himself face to face with me under the open daylight.