Villainy for profit: Area-diving!
From Fallen London Wiki
This page contains details about Fallen London Actions.
The area is the lower stairs where the kitchen staff go in and out. The area-dive is the art of sneaking in and finding whatever valuables have been left about.
Game Instructions: You'll need to build up a Casing... quality to at least 4 to complete this.
Unlocked with A Name Whispered in Darkness 3
Locked with Villainy: Area-Diving
Storylet appears in Area-Diving in Spite