Once the guard passes, you wait until he rounds the corner before making your move. Quickly but quietly, you start to the right and find yourself in a long, fairly well-lit room. Attempting to avoid the areas of amber light slows your advance and the sudden sound of footfalls ascending the stairs behind you forces you to run.

Before you are able to clear the room, the guard spots you. "Halt! What's your business here?" he shouts. Time stands still. The look in your eyes tells the guard all he needs to know. Before he can draw his sword, you deliver a swift punch, knocking him unconscious.