This page details where to find The King of Rats mystery in Paris, Francia, Siege of Paris DLC.
How to Complete The King of Rats
You’ll find this mystery in the northern part of Paris, just northeast of the Clever Fox Tavern. When you arrive in the area you’ll notice some corpses outside. Enter the house and defeat the two soldiers inside, then look for the wooden barrier on the ground. Shoot the wood and then climb down the ladder to the sewer system. You can then explore a room full of rats, where you’ll find a note on a table in the middle of the room. Once you read the note, the mystery will complete.