Curfew

Exploration Stage: Post Office
From: Mr. Black
Description: Curfew is an important part of the Law of Black. It was introduced to protect the citizens, although many think otherwise. The signal of its coming was frightening, as we used a hand-cranked siren to announce it. It's here somewhere, look, for it.
Completed: That is some sound! We don't use such sirens anymore. Instead, a more melodic curfew reminder has been set up in all the watches in the City, and I'm proud of it.