Draco's Presence when Mrs. Norris Found

[potioncat]

No: HPFGUIDX 120663


 Steve/bboyminn wrote:

> Next, consider this, why are ANY of the students on that floor at 
that
> time? The feast has presumably ended and they are all heading back 
to
> their dorms, but only Gryffindor and Ravenclaw have dorms in towers,
> Slytherin and Hufflepuff appear to have underground living quarters.
> This particular area of this particular floor does not seem to be 
the
> regular route to Gryffindor tower, so at best, a stray Ravenclaw or
> two might have past by that area.

Potioncat:
I recall a quote from JKR that said she didn't really have all the 
Hogwart's locations in her head and if she placed them differently 
from book to book, she'd chalk it up to magic. (Sorry, I know it's 
sloppy work not to provide the source.) And in SS/PS it is said that 
passageways change directions on different days and that staircases 
like to move around.