Yea I found the key before lord's post. I had been in that area so I knew about the lock switch but my perception had not triggered the key (it did when I went back). I did not know the witch was there but gave up trying to find the key because I had no hint of where it could be (I figured it would show up later maybe). Thanks. Now to try to sneak past those dead knight (i did once before - i have no invisible spell but i ahve 2 potions left if they last long enough).