Unique Signal
- Exploration Stage
- Post Office
- From
- Mr. Black
- Description
- My colleagues are quite resourceful - I'm sure they will send us the information before long. When we imposed a curfew in the City for security reasons, we invented a unique signal device. Find it.
- Completed
- We equipped all the clocks in the City with such a signal element so that none of the citizens would forget about the curfew.