OOTP (Book 5) , Harry's dreams down ministry corridor

[susanfullin]

No: HPFGUIDX 182089

Hi all!
Bet everyone has written about this tons of times, but I haven't read 
everything yet, and this is bothering me.
When Harry had dreams of the MOM corridor with the black door of the 
Dept of Mysteries, who was he 'following' mentally? LV?? But LV wasn't 
in the MOM. I understand he was in the snake when Mr. Weasley was 
attacked, but in the other dreams it seemed that LV knew what was 
behind the door of the round room with blue candles. Harry saw the door 
open and was almost in that room. How did LV get there? Had he been all 
the way into the prophecy room?
Anyone have answers?? Thanks!
Susan