Depart from the Sites of Grace [Table of Lost Grace],find and talk to [Dung Eater].

Get the [Sewer-Gaol Key].

From the Sites of Grace [Avenue Balcony] to [Subterranean Shunning-Grounds].

Sites of Grace [Underground Roadside].

Find the location of the [Dung Eater] and talk to [Dung Eater].