I got into the Old Church and killed the initiates, one of which dropped a key. Then I and activated three of the sconces on the alter by clicking the switches behind the three accessible pictures. The 4th picture however is behind a locked iron gate near where the initiates were. I assumed that the key that was dropped was to open the iron gate, but it doesn't open it. Is this a bug or am I missing something? Just need a yes it's a bug or no it's not a bug. If it's not, I'll just look around some more. Thanks.