The Traitor's Note is a paper note in the Fallout 4 add-on Nuka World.
Locations
Can be acquired from Operator bosses during the Opposing Gangs random encounter.
Transcripts
This is bullshit. We got some total stranger as Overboss, thanks to that asshole, Gage, and Mags and William don't give a rat's ass about it. The Operators should be running Nuka-World, not some no-name wastelander. If they can't see that, I'm taking matters into my own hands. I got enough people that'll back me on this. And once I've put our new "Overboss" in the ground... Mags and William are next.