[Request] LF fics where muggles slowly discover the magical world.

I recently read "Strangers at Drakeshaugh" by Northumbrian and a large part of the plot revolves around a family of muggles that lives near the Potters; of course, they can't help but notice some strange, almost magical, things going on.

Are there any more fics like that, where some muggles close to the trio or to some other major characters start getting suspicous and eventually unravel the secret of magic's existence? So, I guess a mystery-oriented fic from mostly or partially a muggles' perspective.