If you don't want to know the circumstances surrounding Friday's entry in this slideshow, then don't read any further...
[spoiler]Friday's quote:
Ep #1069 (1995) - Barnabas - 'There MUST be some reason why this has been locked. It was opened earlier.'
From "#1068/1069: Robservations 08/18/03: More Death"
Barnabas goes to the playroom (cool stained glass window in the hall up there). He only carries one candle now. The playroom door is locked. Julia returns with the sheriff. The door has been locked from the inside, reveals Barnabas-sheriff, I want to force the door. The sheriff, however, has some questions. Not now! insists Barn. Look here, says the sheriff, if you two were in the foyer, no one could get a body out of the drawing room, it's not possible. No one knows what's possible or impossible in this house, points out Barnabas--sheriff, you try it-there must be some reason why this is locked-it was open earlier. The door opens immediately for the sheriff, who turns to Barnabas and asks, just how much of this is your own imagination? Barnabas looks at Julia and goes into the room first. The sheriff and Julia follow."
[/spoiler]
And the Robservations references the quote almost perfectly...