There's two legends in my town about two different girls, fifty years apart, both going missing, never being found, and according to legend - being buried in concrete somewhere that they now haunt.
One went missing in the 50's - kidnapped, ransomed, family couldn't pay, killed and encased in the bridge that was being built between this town and the next. Now, if you park under the bridge and put your car in neutral - she pushes you out of the way to make sure you don't share her fate.
The other went missing in 2003, and there are newspaper clippings and witness testimonies to prove this. Her body was never found, but rumors state she was either buried in the foundation of the (at the time still being constructed) Middle School - or that she's under the driveway of a local politician who got his driveway repaved the week she went missing. 20 years and no new leads - there are still nights that I'm awake until the dawn just trying to piece it all together. I hope they find her someday.