The draught sits under the bench for nine weeks and then somebody knocks it over.

It goes into the water pipes for the east wing, which is to say into the tea and the wash water and the baths.

Nobody panic, says the note on the board. It wears off by morning. It will also be the most honest night of your lives.

The east wing has four corridors and three of them are making noise already.

You have until the shaking stops.