Hold up London's tarnished reflection to its own view

Spoiler warning!
This page contains details about Fallen London Actions.

The decline of

[City Name] may present a warning.

Game Instructions: This will gain a Stalemate and then leave the Mind of London.

Success

A warning in turn

London says: you have seen what became of the Forgotten Quarter. Soon your city will be just as empty. [...]

Perhaps London has also taken some other lesson from the example. But whatever other thoughts it has, it hides from you.

Description summary:
Most of the first paragraph varies based on the city's Chosen Site.

Chosen Site	First Paragraph
Ealing	Rubbery spawn will fill the streets, and not just Rubbery men but the older more sessile creatures [...] They will slurp down anything human that still lives there. The urchins they will consume and excrete again: as brine, as oil, as storm-clouded amber.
Evenlode	When it has emptied of every law-abiding person, it will fill with criminals: [...] murderers will swim across the Evenlode to squat in its empty buildings. It will become like Gaider's Mourn, except that all its territory will be marked by feral lamp-cats.
Balmoral	Then the Clay Highwayman will claim the place for his own and ride his steed through the streets. He will speak to the buildings in Loamsprach, and the bricks will wake up, and the city will become like Polythreme, awake and screaming.
Station VIII	Then it will become only another dormitory for Station VIII. [...] They will reorder the place so that none of the streets go where they used to go [...] they will flood the whole with a brilliant searching white light so that no one can ever act unseen.
Burrow
Hurlers
Marigold

[Find the rest of the story at https://www.fallenlondon.com]