- “These two scumbag brothers are Militia spies. I caught you one so you can make an example of him. The other's hiding in the swamp.”
- — The Gangster telling Cole what to do.
After speaking with Zeke regarding those requesting help in New Marais, Cole MacGrath makes his way to the nearby pier. Meeting with a shady civilian Cole is informed that two local brothers are actually Militia spies. The civilian adds that he has captured one of the brothers, whilst the other is hiding in the swamp nearby.
Heading around the side of the pier Cole find the first brother, laying out on the board walk. Grasping the spy, Cole drains the man. Leaving his body, Cole heads into the swamp to find his brother, but is greeted by a group of Militia members. Fighting his way through the Militia guard, Cole finds the second spy and kills him exactly as he did his brother.
- This mission is one of three assassination missions Cole must complete to unlock The Cleaner trophy.