Got a secret, Can you keep it?

All of us have secrets. So do 4 pretty girls from little town (typical scenery for mystery story). The point is that they lost their friend Alison under mysterious circumstances and after a year of her disappearance they start to get strange emails from "A", which know everything about them. But Alison is dead... Then who is it?
This is a youth serial "Pretty Little Liars" with interesting story line, cool outfits and hot boys!

So, interesting, isn't it?

-K.