Secret places

[Arlene]

No: HPFGUIDX 148707

I agree with both of you in that apparating seems to come with a "know 
how and where" attitude. 

However, as far as the Dark mark goes. I believe it's more along the 
lines of a "homing device". The DE's have no idea where they are going, 
yet they do end up in front of LV. So my guess would be that the mark 
sort of "guides thm in". Which could also be why LV seems to know 
EXACTLY who's there and who's not. (Since they all look relatively the 
same gathered under the hoods). 

LV must have some way of "Feeling" or "sensing" his followers.

Arlene