Secrets of a Signal Rat is a quest in Ghost of a Tale. It can be obtained at Silas' home at the top of Dwindling Heights Keep after finding his figurines.
- Steal the key to Silas' footlocker.
- Open and search through Silas' footlocker.
- Confront Silas.
- You challenged Silas to explain why he has a Mouse's figurines in his possession.