We got a couple of good long looks at the whole drawing room with nobody in it. It was fun. That room needs more rugs, or alternatively, a more elegant floor. I understand that in our universe, the cameramen need the floor to be rugless and there's no point in making it a nice floor when the wheels of the camera units will ruin everything, but it still looks strange.
I didn't know the lights were out until Vicky set out to light a candle. How many circuits does the house have? There ought to be at least one outlet in the drawing room that's on a different circuit from the others, but maybe there is one and Vicky, new to the house, doesn't know it.
"Burke just implicated himself"
Yes, it's an interesting move, isn't it? I guess Burke's seen and heard enough to know that he won't be railroaded into jail for this; the Collinses won't risk having the story about David coming out. And what fun for Burke to let Roger know that he knows about David!