Devrij is right, a zombie busted into our little warehouse. However, I didn't see anybody kill it - and it's gone now. Weird, that. Anyways, it appears they're on to us - time to either find a new hideout, or make a move. How's everybody fixed for supplies and AP?
EDIT: Scouted the mall. 2 in NW, every other corner has only 1 zed. NE corner is wide open at the moment. Remember - free running from the warehouse will put you *outside* the mall while it's ruined - and may in fact injure you a bit.