The Importance of Detecting Evil

Dress yourself in corpses and move slowly closer towards me. I won't know what it is. Go hide yourself in a pile of corpses and examine the gate. You can see these dark figures and robes? They seem unusually pale and thin. Do you have to detect evil or to detect magic or some kind of thing like that? Yeah, but we know they're evil and magic. That's metagaming. It could just be in a goth band. Don't have any fabric. These... You can get some at the store later. What are these guys doing? They're digging or... They're digging and hauling corpses into the ziggurat. Are there any of them