I just purchased The Inquisitor bundle for iOS, and am having fun playing Inquisitor's Heartbeat. However, I appear to be stuck on map 1 of level 2. I'm told there's a locked door in my way, but I can't seem to find the key to unlock it.
While walking around, I'll eventually find something metallic-sounding on the ground, but don't know how to interact with whatever it is, assuming it can be interacted with at all.
Can anyone help me get past this part?