If you don't want to know the circumstances surrounding Saturday's entry in this slideshow, then don't read any further...
[spoiler]Saturday's quote:
Ep #26 (1966) - Liz - 'What did you do, David? You MUST have done something.'
From "#0025/0026: Robservations 06/05/01: Evidence Everywhere"
Liz and David enter the drawing room and she asks him to explain that statement. Please, Aunt Elizabeth, he says. You made an accusation against Miss Winters, says Liz, and you're not leaving until I get a full explanation. David says she tried to hurt him, that's all--she grabbed at me and pulled me into her room--I was lucky to get away. Miss Winters never seemed like that sort of person, remarks Liz. Nobody believes me! laments David. What did you do? she asks--when he doesn't reply, she insists he must have done something. I took her stupid letter she got today! he says--I borrowed it, just to see what it was about, and she got mad. I don't blame her for being angry, says Liz, but I find it hard to believe she hit you. Well she did, he says, falling into her embrace, I'm scared, she hates me and is going to make up all kinds of stories about me.
[/spoiler]
The Robservations references the quote quite well...