Key to the Old Newgate Cellars
From Fallen London Wiki
Wrap it in sack-cloth and don't tell the Constables. Use this to change your Lodgings to the Old Newgate Cellars.
See here for , or click to show them.
It cannot be bought or sold at The Echo Bazaar!.
This item has no documented uses.
Old Newgate Cellars
No-one goes there. Everyone knows that.