Barter a Puzzling Map for a secret
From Fallen London Wiki
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From: Bartering with the Tiger Keeper
"Careful. Cartography has been known to destroy empires."
Unlocked with 
1 x Puzzling Map
Success
A pause and a withdrawal
"No – no, on second thoughts, I think not. There was another map – one the Labyrinth's founder brought me. You might consider that. But you won't be able to use it in here. […] Look up. No, not the Surface. Just up there, at the top."
[Find the rest of the story at https://www.fallenlondon.com]
Success Instructions: You still have your Map. If you don't know what he's talking about, you can safely ignore this. It's not an essential part of the game.
You've gained 1 x Cryptic Clue
