If you don't want to know the circumstances surrounding Monday's entry in this slideshow, then don't read any further...
[spoiler]Monday's quote:
Ep #555 (1968) - Nicholas - 'So you MUSTN'T be afraid to tell me the truth.'
From "Robservations 7/10/02 - #554/555 - Guess Who's a Vampire Now?"
Nicholas goes to see Adam and asks where Vicki is. Adam claims not to know, but Nicholas knows he's lying and assures him he understands why. Nicholas says he won't tattle on him, that he's his friend and saved his life. He wants to know where he'd hiding Vicki.
[/spoiler]
The Robservations doesn't reference the quote at all. However, Nichols delivers it after he says that he saved Adam's life and is his friend and before he insists Adam show him where he's hidden Miss Winters.
And this is the second quote from this ep. The first (Nicholas - 'No, that is out of the question. You MUST STAY here') was back on January 28th.