Take the basement passage
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From: Structural failings
The two houses adjoin via the basement. Cross to your mark's basement before you are caught.
Game Instructions: Gain more Progress, but also an Obstacle.
Unlocked with 
Subtle 4
Locked with 
A Flash Lay: an Inconvenient Door
Success
Promisingly impenetrable
You are inside your mark's unattended house. At the end of the basement hallway is a door [...] leading to a room you didn't know was there. The locks are too solid for your current equipment. But you can come back, now you know it is here.
You've gained 5 x Flash Lay's Progress
You now have 1 x A Flash Lay: an Inconvenient Door
