Our Little Secret

First off, you have to find your way to Andale, which is in the middle-bottom of the map, directly south of Fairfax Ruins. When you arrive, the people will act as if their lives are perfect and there is no "wasteland" and there was no Great War. After looking around a bit, find your way to Old Man Harris' house. He will tell you to run away as fast as possible and reveal that there's something very evil going on in the town. After finishing the quest, (depending on how you resolve it) he may reveal more about the history and story of Andale.

After talking to Harris head to the abandoned shack or the basement of the Smith household. Both doors require 100 lockpick skill, or a key which you can pickpocket (from Bill Wilson or Jack Smith). Upon proceeding into the area, the player can look around and discover that "Strange Meat" really is....humans. Oddly, you'll still receive a karma loss for stealing the rippers and knives and such you'll find lying around. Upon exiting the area, the player will be confronted by the residents of the town, with the exceptions of Junior,  Jenny, and Old man Harris. Jack Smith will engage the player in conversion and ask if he/she saw anything unusual.

If the player insists that they did not see anything and agrees to keep their secret (passing a speech check), the townsfolk will be kind to the player and Martha Wilson will actually bake pies for the player. On the other hand, if the player refuses to keep the secret, the residents will become hostile and attack. After the fight, the player can proceed to Old Man Harris' house. He will then tell more of the town's history and will agree to help raise the kids right. He states that only after his wife died did he begin to question all the things that went on in Andale... and also that not only was it a town of cannibals, but a town of inbred cannibals.

There is no reward for this quest other than some karma for killing the cannibals and some loot from the buildings.

On a related note, you may encounter three-person "hunter" parties around Andale who will offer you a sample of their meat, without telling you what it is. If you choose, you can trade with them for more. It's people, of course. Killing these hunting parties gives positive karma, and whatever you can loot from their corpses.