Inspired by [Howl]Flufffrog
You see a report of a missing person on the news. You ignore it, until two minutes later when they show up on your doorstep...
A character becomes increasingly convinced that their new neighbour is involved in something sinister, but they can't prove it...
In an alternative future where nobody eats meat, your protagonist has been secretly running a small farm.
Create a story around this character and their scenario.